Finding the Fourth Proportional to 9,088.29, 12,557.34 and 7,907.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,088.29 : 12,557.34 = 7,907.31 : x
2. Step 2: Convert to fraction form
   9,088.29/12,557.34 = 7,907.31/x
3. Step 3: Cross multiply
   9,088.29x = 12,557.34 × 7,907.31
4. Step 4: Simplify right side
   9,088.29x = 99,294,780.16
5. Step 5: Solve for x
   x = 99,294,780.16/9,088.29
6. Step 6: Final answer
   x = 10,925.57