Finding the Fourth Proportional to 16,659.51, 24,976.95 and 7,884.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,659.51 : 24,976.95 = 7,884.15 : x
2. Step 2: Convert to fraction form
   16,659.51/24,976.95 = 7,884.15/x
3. Step 3: Cross multiply
   16,659.51x = 24,976.95 × 7,884.15
4. Step 4: Simplify right side
   16,659.51x = 196,922,020.34
5. Step 5: Solve for x
   x = 196,922,020.34/16,659.51
6. Step 6: Final answer
   x = 11,820.40