Finding the Fourth Proportional to 10,424.39, 14,385.65 and 5,708.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,424.39 : 14,385.65 = 5,708.76 : x
2. Step 2: Convert to fraction form
   10,424.39/14,385.65 = 5,708.76/x
3. Step 3: Cross multiply
   10,424.39x = 14,385.65 × 5,708.76
4. Step 4: Simplify right side
   10,424.39x = 82,124,194.75
5. Step 5: Solve for x
   x = 82,124,194.75/10,424.39
6. Step 6: Final answer
   x = 7,878.09