Finding the Fourth Proportional to 9,350.78, 12,904.37 and 5,372.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,350.78 : 12,904.37 = 5,372.69 : x
2. Step 2: Convert to fraction form
   9,350.78/12,904.37 = 5,372.69/x
3. Step 3: Cross multiply
   9,350.78x = 12,904.37 × 5,372.69
4. Step 4: Simplify right side
   9,350.78x = 69,331,088.27
5. Step 5: Solve for x
   x = 69,331,088.27/9,350.78
6. Step 6: Final answer
   x = 7,414.48