Finding the Fourth Proportional to 11,025.72, 15,215.43 and 5,989.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,025.72 : 15,215.43 = 5,989.91 : x
2. Step 2: Convert to fraction form
   11,025.72/15,215.43 = 5,989.91/x
3. Step 3: Cross multiply
   11,025.72x = 15,215.43 × 5,989.91
4. Step 4: Simplify right side
   11,025.72x = 91,138,980.23
5. Step 5: Solve for x
   x = 91,138,980.23/11,025.72
6. Step 6: Final answer
   x = 8,266.03