Finding the Fourth Proportional to 9,365.31, 12,925.42 and 5,386.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,365.31 : 12,925.42 = 5,386.32 : x
2. Step 2: Convert to fraction form
   9,365.31/12,925.42 = 5,386.32/x
3. Step 3: Cross multiply
   9,365.31x = 12,925.42 × 5,386.32
4. Step 4: Simplify right side
   9,365.31x = 69,620,434.79
5. Step 5: Solve for x
   x = 69,620,434.79/9,365.31
6. Step 6: Final answer
   x = 7,433.86