Finding the Fourth Proportional to 23,557.98, 32,509.88 and 12,947.39

Step by Step Solution

1. Step 1: Write the proportion equation
   23,557.98 : 32,509.88 = 12,947.39 : x
2. Step 2: Convert to fraction form
   23,557.98/32,509.88 = 12,947.39/x
3. Step 3: Cross multiply
   23,557.98x = 32,509.88 × 12,947.39
4. Step 4: Simplify right side
   23,557.98x = 420,917,867.93
5. Step 5: Solve for x
   x = 420,917,867.93/23,557.98
6. Step 6: Final answer
   x = 17,867.32