Finding the Fourth Proportional to 10,989.60, 15,165.71 and 5,953.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.60 : 15,165.71 = 5,953.83 : x
2. Step 2: Convert to fraction form
   10,989.60/15,165.71 = 5,953.83/x
3. Step 3: Cross multiply
   10,989.60x = 15,165.71 × 5,953.83
4. Step 4: Simplify right side
   10,989.60x = 90,294,029.40
5. Step 5: Solve for x
   x = 90,294,029.40/10,989.60
6. Step 6: Final answer
   x = 8,216.32