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Finding the Fourth Proportional to 19,061.78, 28,591.30 and 5,913.81

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Solution

The fourth proportional to 19,061.78, 28,591.30 and 5,913.81 is: 8,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.78 : 28,591.30 = 5,913.81 : x
  2. Step 2: Convert to fraction form
    19,061.78/28,591.30 = 5,913.81/x
  3. Step 3: Cross multiply
    19,061.78x = 28,591.30 × 5,913.81
  4. Step 4: Simplify right side
    19,061.78x = 169,083,515.85
  5. Step 5: Solve for x
    x = 169,083,515.85/19,061.78
  6. Step 6: Final answer
    x = 8,870.29

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