Finding the Fourth Proportional to 17,857.74, 24,643.98 and 9,900.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,857.74 : 24,643.98 = 9,900.30 : x
2. Step 2: Convert to fraction form
   17,857.74/24,643.98 = 9,900.30/x
3. Step 3: Cross multiply
   17,857.74x = 24,643.98 × 9,900.30
4. Step 4: Simplify right side
   17,857.74x = 243,982,795.19
5. Step 5: Solve for x
   x = 243,982,795.19/17,857.74
6. Step 6: Final answer
   x = 13,662.58