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Finding the Fourth Proportional to 11,920.44, 17,858.87 and 5,583.69

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Solution

The fourth proportional to 11,920.44, 17,858.87 and 5,583.69 is: 8,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.44 : 17,858.87 = 5,583.69 : x
  2. Step 2: Convert to fraction form
    11,920.44/17,858.87 = 5,583.69/x
  3. Step 3: Cross multiply
    11,920.44x = 17,858.87 × 5,583.69
  4. Step 4: Simplify right side
    11,920.44x = 99,718,386.85
  5. Step 5: Solve for x
    x = 99,718,386.85/11,920.44
  6. Step 6: Final answer
    x = 8,365.33

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