Finding the Fourth Proportional to 13,611.97, 18,782.15 and 7,561.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,611.97 : 18,782.15 = 7,561.25 : x
2. Step 2: Convert to fraction form
   13,611.97/18,782.15 = 7,561.25/x
3. Step 3: Cross multiply
   13,611.97x = 18,782.15 × 7,561.25
4. Step 4: Simplify right side
   13,611.97x = 142,016,428.33
5. Step 5: Solve for x
   x = 142,016,428.33/13,611.97
6. Step 6: Final answer
   x = 10,433.20