Finding the Fourth Proportional to 10,307.38, 15,451.89 and 5,039.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,307.38 : 15,451.89 = 5,039.55 : x
2. Step 2: Convert to fraction form
   10,307.38/15,451.89 = 5,039.55/x
3. Step 3: Cross multiply
   10,307.38x = 15,451.89 × 5,039.55
4. Step 4: Simplify right side
   10,307.38x = 77,870,572.25
5. Step 5: Solve for x
   x = 77,870,572.25/10,307.38
6. Step 6: Final answer
   x = 7,554.84