Finding the Fourth Proportional to 10,084.42, 15,129.72 and 5,157.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,084.42 : 15,129.72 = 5,157.52 : x
2. Step 2: Convert to fraction form
   10,084.42/15,129.72 = 5,157.52/x
3. Step 3: Cross multiply
   10,084.42x = 15,129.72 × 5,157.52
4. Step 4: Simplify right side
   10,084.42x = 78,031,833.49
5. Step 5: Solve for x
   x = 78,031,833.49/10,084.42
6. Step 6: Final answer
   x = 7,737.86