Finding the Fourth Proportional to 10,071.32, 15,105.74 and 5,144.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,071.32 : 15,105.74 = 5,144.52 : x
2. Step 2: Convert to fraction form
   10,071.32/15,105.74 = 5,144.52/x
3. Step 3: Cross multiply
   10,071.32x = 15,105.74 × 5,144.52
4. Step 4: Simplify right side
   10,071.32x = 77,711,781.54
5. Step 5: Solve for x
   x = 77,711,781.54/10,071.32
6. Step 6: Final answer
   x = 7,716.15