Finding the Fourth Proportional to 9,139.34, 13,715.49 and 3,942.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.34 : 13,715.49 = 3,942.38 : x
2. Step 2: Convert to fraction form
   9,139.34/13,715.49 = 3,942.38/x
3. Step 3: Cross multiply
   9,139.34x = 13,715.49 × 3,942.38
4. Step 4: Simplify right side
   9,139.34x = 54,071,673.47
5. Step 5: Solve for x
   x = 54,071,673.47/9,139.34
6. Step 6: Final answer
   x = 5,916.37