Finding the Fourth Proportional to 9,611.73, 13,264.43 and 5,420.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,611.73 : 13,264.43 = 5,420.25 : x
2. Step 2: Convert to fraction form
   9,611.73/13,264.43 = 5,420.25/x
3. Step 3: Cross multiply
   9,611.73x = 13,264.43 × 5,420.25
4. Step 4: Simplify right side
   9,611.73x = 71,896,499.61
5. Step 5: Solve for x
   x = 71,896,499.61/9,611.73
6. Step 6: Final answer
   x = 7,480.08