Finding the Fourth Proportional to 9,345.30, 12,895.89 and 5,365.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,345.30 : 12,895.89 = 5,365.86 : x
2. Step 2: Convert to fraction form
   9,345.30/12,895.89 = 5,365.86/x
3. Step 3: Cross multiply
   9,345.30x = 12,895.89 × 5,365.86
4. Step 4: Simplify right side
   9,345.30x = 69,197,540.32
5. Step 5: Solve for x
   x = 69,197,540.32/9,345.30
6. Step 6: Final answer
   x = 7,404.53