Finding the Fourth Proportional to 16,611.84, 24,921.98 and 5,518.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,611.84 : 24,921.98 = 5,518.59 : x
2. Step 2: Convert to fraction form
   16,611.84/24,921.98 = 5,518.59/x
3. Step 3: Cross multiply
   16,611.84x = 24,921.98 × 5,518.59
4. Step 4: Simplify right side
   16,611.84x = 137,534,189.61
5. Step 5: Solve for x
   x = 137,534,189.61/16,611.84
6. Step 6: Final answer
   x = 8,279.29