Finding the Fourth Proportional to 10,385.47, 15,498.72 and 9,277.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.47 : 15,498.72 = 9,277.39 : x
2. Step 2: Convert to fraction form
   10,385.47/15,498.72 = 9,277.39/x
3. Step 3: Cross multiply
   10,385.47x = 15,498.72 × 9,277.39
4. Step 4: Simplify right side
   10,385.47x = 143,787,669.94
5. Step 5: Solve for x
   x = 143,787,669.94/10,385.47
6. Step 6: Final answer
   x = 13,845.08