Finding the Fourth Proportional to 10,815.12, 16,250.02 and 10,377.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,815.12 : 16,250.02 = 10,377.72 : x
2. Step 2: Convert to fraction form
   10,815.12/16,250.02 = 10,377.72/x
3. Step 3: Cross multiply
   10,815.12x = 16,250.02 × 10,377.72
4. Step 4: Simplify right side
   10,815.12x = 168,638,131.61
5. Step 5: Solve for x
   x = 168,638,131.61/10,815.12
6. Step 6: Final answer
   x = 15,592.81