Finding the Fourth Proportional to 9,345.31, 12,895.71 and 5,366.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,345.31 : 12,895.71 = 5,366.18 : x
2. Step 2: Convert to fraction form
   9,345.31/12,895.71 = 5,366.18/x
3. Step 3: Cross multiply
   9,345.31x = 12,895.71 × 5,366.18
4. Step 4: Simplify right side
   9,345.31x = 69,200,713.20
5. Step 5: Solve for x
   x = 69,200,713.20/9,345.31
6. Step 6: Final answer
   x = 7,404.86