Finding the Fourth Proportional to 12,047.27, 16,632.78 and 7,742.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,047.27 : 16,632.78 = 7,742.11 : x
2. Step 2: Convert to fraction form
   12,047.27/16,632.78 = 7,742.11/x
3. Step 3: Cross multiply
   12,047.27x = 16,632.78 × 7,742.11
4. Step 4: Simplify right side
   12,047.27x = 128,772,812.59
5. Step 5: Solve for x
   x = 128,772,812.59/12,047.27
6. Step 6: Final answer
   x = 10,688.96