Finding the Fourth Proportional to 10,861.31, 14,988.20 and 6,145.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,861.31 : 14,988.20 = 6,145.59 : x
2. Step 2: Convert to fraction form
   10,861.31/14,988.20 = 6,145.59/x
3. Step 3: Cross multiply
   10,861.31x = 14,988.20 × 6,145.59
4. Step 4: Simplify right side
   10,861.31x = 92,111,332.04
5. Step 5: Solve for x
   x = 92,111,332.04/10,861.31
6. Step 6: Final answer
   x = 8,480.68