Finding the Fourth Proportional to 23,641.12, 32,624.29 and 12,886.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,641.12 : 32,624.29 = 12,886.09 : x
2. Step 2: Convert to fraction form
   23,641.12/32,624.29 = 12,886.09/x
3. Step 3: Cross multiply
   23,641.12x = 32,624.29 × 12,886.09
4. Step 4: Simplify right side
   23,641.12x = 420,399,507.92
5. Step 5: Solve for x
   x = 420,399,507.92/23,641.12
6. Step 6: Final answer
   x = 17,782.56