Finding the Fourth Proportional to 9,862.76, 13,610.43 and 5,386.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,862.76 : 13,610.43 = 5,386.41 : x
2. Step 2: Convert to fraction form
   9,862.76/13,610.43 = 5,386.41/x
3. Step 3: Cross multiply
   9,862.76x = 13,610.43 × 5,386.41
4. Step 4: Simplify right side
   9,862.76x = 73,311,356.26
5. Step 5: Solve for x
   x = 73,311,356.26/9,862.76
6. Step 6: Final answer
   x = 7,433.15