Finding the Fourth Proportional to 8,049.72, 12,061.40 and 7,742.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,049.72 : 12,061.40 = 7,742.16 : x
2. Step 2: Convert to fraction form
   8,049.72/12,061.40 = 7,742.16/x
3. Step 3: Cross multiply
   8,049.72x = 12,061.40 × 7,742.16
4. Step 4: Simplify right side
   8,049.72x = 93,381,288.62
5. Step 5: Solve for x
   x = 93,381,288.62/8,049.72
6. Step 6: Final answer
   x = 11,600.56