Finding the Fourth Proportional to 23,557.16, 32,507.69 and 12,947.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,557.16 : 32,507.69 = 12,947.18 : x
2. Step 2: Convert to fraction form
   23,557.16/32,507.69 = 12,947.18/x
3. Step 3: Cross multiply
   23,557.16x = 32,507.69 × 12,947.18
4. Step 4: Simplify right side
   23,557.16x = 420,882,686.54
5. Step 5: Solve for x
   x = 420,882,686.54/23,557.16
6. Step 6: Final answer
   x = 17,866.44