Finding the Fourth Proportional to 9,862.27, 13,609.39 and 5,385.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,862.27 : 13,609.39 = 5,385.95 : x
2. Step 2: Convert to fraction form
   9,862.27/13,609.39 = 5,385.95/x
3. Step 3: Cross multiply
   9,862.27x = 13,609.39 × 5,385.95
4. Step 4: Simplify right side
   9,862.27x = 73,299,494.07
5. Step 5: Solve for x
   x = 73,299,494.07/9,862.27
6. Step 6: Final answer
   x = 7,432.31