Finding the Fourth Proportional to 10,925.49, 15,097.61 and 9,309.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,925.49 : 15,097.61 = 9,309.51 : x
2. Step 2: Convert to fraction form
   10,925.49/15,097.61 = 9,309.51/x
3. Step 3: Cross multiply
   10,925.49x = 15,097.61 × 9,309.51
4. Step 4: Simplify right side
   10,925.49x = 140,551,304.72
5. Step 5: Solve for x
   x = 140,551,304.72/10,925.49
6. Step 6: Final answer
   x = 12,864.53