Finding the Fourth Proportional to 14,384.18, 19,842.57 and 9,900.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,384.18 : 19,842.57 = 9,900.15 : x
2. Step 2: Convert to fraction form
   14,384.18/19,842.57 = 9,900.15/x
3. Step 3: Cross multiply
   14,384.18x = 19,842.57 × 9,900.15
4. Step 4: Simplify right side
   14,384.18x = 196,444,400.78
5. Step 5: Solve for x
   x = 196,444,400.78/14,384.18
6. Step 6: Final answer
   x = 13,656.97