Finding the Fourth Proportional to 8,978.04, 12,227.76 and 8,875.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.04 : 12,227.76 = 8,875.17 : x
2. Step 2: Convert to fraction form
   8,978.04/12,227.76 = 8,875.17/x
3. Step 3: Cross multiply
   8,978.04x = 12,227.76 × 8,875.17
4. Step 4: Simplify right side
   8,978.04x = 108,523,448.72
5. Step 5: Solve for x
   x = 108,523,448.72/8,978.04
6. Step 6: Final answer
   x = 12,087.65