Finding the Fourth Proportional to 16,619.31, 24,911.86 and 7,257.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,619.31 : 24,911.86 = 7,257.58 : x
2. Step 2: Convert to fraction form
   16,619.31/24,911.86 = 7,257.58/x
3. Step 3: Cross multiply
   16,619.31x = 24,911.86 × 7,257.58
4. Step 4: Simplify right side
   16,619.31x = 180,799,816.90
5. Step 5: Solve for x
   x = 180,799,816.90/16,619.31
6. Step 6: Final answer
   x = 10,878.90