Finding the Fourth Proportional to 16,659.68, 24,987.36 and 7,900.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,659.68 : 24,987.36 = 7,900.16 : x
2. Step 2: Convert to fraction form
   16,659.68/24,987.36 = 7,900.16/x
3. Step 3: Cross multiply
   16,659.68x = 24,987.36 × 7,900.16
4. Step 4: Simplify right side
   16,659.68x = 197,404,141.98
5. Step 5: Solve for x
   x = 197,404,141.98/16,659.68
6. Step 6: Final answer
   x = 11,849.22