Finding the Fourth Proportional to 17,856.56, 24,642.07 and 9,900

Step by Step Solution

1. Step 1: Write the proportion equation
   17,856.56 : 24,642.07 = 9,900 : x
2. Step 2: Convert to fraction form
   17,856.56/24,642.07 = 9,900/x
3. Step 3: Cross multiply
   17,856.56x = 24,642.07 × 9,900
4. Step 4: Simplify right side
   17,856.56x = 243,956,468.25
5. Step 5: Solve for x
   x = 243,956,468.25/17,856.56
6. Step 6: Final answer
   x = 13,662.01