Finding the Fourth Proportional to 10,517.30, 14,514.90 and 7,860.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,517.30 : 14,514.90 = 7,860.10 : x
2. Step 2: Convert to fraction form
   10,517.30/14,514.90 = 7,860.10/x
3. Step 3: Cross multiply
   10,517.30x = 14,514.90 × 7,860.10
4. Step 4: Simplify right side
   10,517.30x = 114,088,565.49
5. Step 5: Solve for x
   x = 114,088,565.49/10,517.30
6. Step 6: Final answer
   x = 10,847.70