Finding the Fourth Proportional to 14,118.31, 21,178.17 and 3,588.43

Step by Step Solution

1. Step 1: Write the proportion equation
   14,118.31 : 21,178.17 = 3,588.43 : x
2. Step 2: Convert to fraction form
   14,118.31/21,178.17 = 3,588.43/x
3. Step 3: Cross multiply
   14,118.31x = 21,178.17 × 3,588.43
4. Step 4: Simplify right side
   14,118.31x = 75,996,380.57
5. Step 5: Solve for x
   x = 75,996,380.57/14,118.31
6. Step 6: Final answer
   x = 5,382.83