Finding the Fourth Proportional to 23,557.89, 32,508.72 and 12,947.91

Step by Step Solution

1. Step 1: Write the proportion equation
   23,557.89 : 32,508.72 = 12,947.91 : x
2. Step 2: Convert to fraction form
   23,557.89/32,508.72 = 12,947.91/x
3. Step 3: Cross multiply
   23,557.89x = 32,508.72 × 12,947.91
4. Step 4: Simplify right side
   23,557.89x = 420,919,980.78
5. Step 5: Solve for x
   x = 420,919,980.78/23,557.89
6. Step 6: Final answer
   x = 17,867.47