Finding the Fourth Proportional to 9,414.02, 12,990.84 and 5,222

Step by Step Solution

1. Step 1: Write the proportion equation
   9,414.02 : 12,990.84 = 5,222 : x
2. Step 2: Convert to fraction form
   9,414.02/12,990.84 = 5,222/x
3. Step 3: Cross multiply
   9,414.02x = 12,990.84 × 5,222
4. Step 4: Simplify right side
   9,414.02x = 67,838,166.48
5. Step 5: Solve for x
   x = 67,838,166.48/9,414.02
6. Step 6: Final answer
   x = 7,206.08