Finding the Fourth Proportional to 11,156.48, 16,715.52 and 7,863.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,156.48 : 16,715.52 = 7,863.68 : x
2. Step 2: Convert to fraction form
   11,156.48/16,715.52 = 7,863.68/x
3. Step 3: Cross multiply
   11,156.48x = 16,715.52 × 7,863.68
4. Step 4: Simplify right side
   11,156.48x = 131,445,500.31
5. Step 5: Solve for x
   x = 131,445,500.31/11,156.48
6. Step 6: Final answer
   x = 11,781.99