Finding the Fourth Proportional to 9,061.06, 12,485.10 and 8,437.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,061.06 : 12,485.10 = 8,437.72 : x
2. Step 2: Convert to fraction form
   9,061.06/12,485.10 = 8,437.72/x
3. Step 3: Cross multiply
   9,061.06x = 12,485.10 × 8,437.72
4. Step 4: Simplify right side
   9,061.06x = 105,345,777.97
5. Step 5: Solve for x
   x = 105,345,777.97/9,061.06
6. Step 6: Final answer
   x = 11,626.21