Finding the Fourth Proportional to 23,587.32, 32,552.44 and 12,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,587.32 : 32,552.44 = 12,978.88 : x
2. Step 2: Convert to fraction form
   23,587.32/32,552.44 = 12,978.88/x
3. Step 3: Cross multiply
   23,587.32x = 32,552.44 × 12,978.88
4. Step 4: Simplify right side
   23,587.32x = 422,494,212.47
5. Step 5: Solve for x
   x = 422,494,212.47/23,587.32
6. Step 6: Final answer
   x = 17,911.92