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Finding the Fourth Proportional to 10,590.41, 15,865.56 and 7,069.80

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Solution

The fourth proportional to 10,590.41, 15,865.56 and 7,069.80 is: 10,591.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,590.41 : 15,865.56 = 7,069.80 : x
  2. Step 2: Convert to fraction form
    10,590.41/15,865.56 = 7,069.80/x
  3. Step 3: Cross multiply
    10,590.41x = 15,865.56 × 7,069.80
  4. Step 4: Simplify right side
    10,590.41x = 112,166,336.09
  5. Step 5: Solve for x
    x = 112,166,336.09/10,590.41
  6. Step 6: Final answer
    x = 10,591.31

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