Finding the Fourth Proportional to 10,989.72, 15,165.84 and 5,954.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.72 : 15,165.84 = 5,954.04 : x
2. Step 2: Convert to fraction form
   10,989.72/15,165.84 = 5,954.04/x
3. Step 3: Cross multiply
   10,989.72x = 15,165.84 × 5,954.04
4. Step 4: Simplify right side
   10,989.72x = 90,298,017.99
5. Step 5: Solve for x
   x = 90,298,017.99/10,989.72
6. Step 6: Final answer
   x = 8,216.59