Finding the Fourth Proportional to 8,838.76, 12,192.42 and 5,521

Step by Step Solution

1. Step 1: Write the proportion equation
   8,838.76 : 12,192.42 = 5,521 : x
2. Step 2: Convert to fraction form
   8,838.76/12,192.42 = 5,521/x
3. Step 3: Cross multiply
   8,838.76x = 12,192.42 × 5,521
4. Step 4: Simplify right side
   8,838.76x = 67,314,350.82
5. Step 5: Solve for x
   x = 67,314,350.82/8,838.76
6. Step 6: Final answer
   x = 7,615.81