Finding the Fourth Proportional to 16,458.18, 24,670.86 and 10,618.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,458.18 : 24,670.86 = 10,618.89 : x
2. Step 2: Convert to fraction form
   16,458.18/24,670.86 = 10,618.89/x
3. Step 3: Cross multiply
   16,458.18x = 24,670.86 × 10,618.89
4. Step 4: Simplify right side
   16,458.18x = 261,977,148.55
5. Step 5: Solve for x
   x = 261,977,148.55/16,458.18
6. Step 6: Final answer
   x = 15,917.75