Finding the Fourth Proportional to 10,516.45, 15,766.34 and 5,248.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,516.45 : 15,766.34 = 5,248.74 : x
2. Step 2: Convert to fraction form
   10,516.45/15,766.34 = 5,248.74/x
3. Step 3: Cross multiply
   10,516.45x = 15,766.34 × 5,248.74
4. Step 4: Simplify right side
   10,516.45x = 82,753,494.56
5. Step 5: Solve for x
   x = 82,753,494.56/10,516.45
6. Step 6: Final answer
   x = 7,868.96