Finding the Fourth Proportional to 8,832.24, 12,117.60 and 8,602.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,832.24 : 12,117.60 = 8,602.20 : x
2. Step 2: Convert to fraction form
   8,832.24/12,117.60 = 8,602.20/x
3. Step 3: Cross multiply
   8,832.24x = 12,117.60 × 8,602.20
4. Step 4: Simplify right side
   8,832.24x = 104,238,018.72
5. Step 5: Solve for x
   x = 104,238,018.72/8,832.24
6. Step 6: Final answer
   x = 11,801.99