Finding the Fourth Proportional to 10,388.62, 14,337.89 and 6,140.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.62 : 14,337.89 = 6,140.15 : x
2. Step 2: Convert to fraction form
   10,388.62/14,337.89 = 6,140.15/x
3. Step 3: Cross multiply
   10,388.62x = 14,337.89 × 6,140.15
4. Step 4: Simplify right side
   10,388.62x = 88,036,810.63
5. Step 5: Solve for x
   x = 88,036,810.63/10,388.62
6. Step 6: Final answer
   x = 8,474.35