Finding the Fourth Proportional to 23,588.96, 32,552.32 and 12,978.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,588.96 : 32,552.32 = 12,978.40 : x
2. Step 2: Convert to fraction form
   23,588.96/32,552.32 = 12,978.40/x
3. Step 3: Cross multiply
   23,588.96x = 32,552.32 × 12,978.40
4. Step 4: Simplify right side
   23,588.96x = 422,477,029.89
5. Step 5: Solve for x
   x = 422,477,029.89/23,588.96
6. Step 6: Final answer
   x = 17,909.95