Finding the Fourth Proportional to 22,683.72, 34,047.12 and 13,935.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,683.72 : 34,047.12 = 13,935.72 : x
2. Step 2: Convert to fraction form
   22,683.72/34,047.12 = 13,935.72/x
3. Step 3: Cross multiply
   22,683.72x = 34,047.12 × 13,935.72
4. Step 4: Simplify right side
   22,683.72x = 474,471,131.13
5. Step 5: Solve for x
   x = 474,471,131.13/22,683.72
6. Step 6: Final answer
   x = 20,916.81