Finding the Fourth Proportional to 10,562.70, 15,916.71 and 8,754.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,562.70 : 15,916.71 = 8,754.51 : x
2. Step 2: Convert to fraction form
   10,562.70/15,916.71 = 8,754.51/x
3. Step 3: Cross multiply
   10,562.70x = 15,916.71 × 8,754.51
4. Step 4: Simplify right side
   10,562.70x = 139,342,996.86
5. Step 5: Solve for x
   x = 139,342,996.86/10,562.70
6. Step 6: Final answer
   x = 13,191.99