Finding the Fourth Proportional to 23,587.91, 32,551.37 and 12,978.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,587.91 : 32,551.37 = 12,978.23 : x
2. Step 2: Convert to fraction form
   23,587.91/32,551.37 = 12,978.23/x
3. Step 3: Cross multiply
   23,587.91x = 32,551.37 × 12,978.23
4. Step 4: Simplify right side
   23,587.91x = 422,458,987.70
5. Step 5: Solve for x
   x = 422,458,987.70/23,587.91
6. Step 6: Final answer
   x = 17,909.98