Finding the Fourth Proportional to 9,062.32, 12,503.28 and 5,521.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,062.32 : 12,503.28 = 5,521.80 : x
2. Step 2: Convert to fraction form
   9,062.32/12,503.28 = 5,521.80/x
3. Step 3: Cross multiply
   9,062.32x = 12,503.28 × 5,521.80
4. Step 4: Simplify right side
   9,062.32x = 69,040,611.50
5. Step 5: Solve for x
   x = 69,040,611.50/9,062.32
6. Step 6: Final answer
   x = 7,618.43