Finding the Fourth Proportional to 9,375.47, 12,938.61 and 5,397.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,375.47 : 12,938.61 = 5,397.15 : x
2. Step 2: Convert to fraction form
   9,375.47/12,938.61 = 5,397.15/x
3. Step 3: Cross multiply
   9,375.47x = 12,938.61 × 5,397.15
4. Step 4: Simplify right side
   9,375.47x = 69,831,618.96
5. Step 5: Solve for x
   x = 69,831,618.96/9,375.47
6. Step 6: Final answer
   x = 7,448.34