Finding the Fourth Proportional to 23,827.50, 32,878.98 and 13,215.69

Step by Step Solution

1. Step 1: Write the proportion equation
   23,827.50 : 32,878.98 = 13,215.69 : x
2. Step 2: Convert to fraction form
   23,827.50/32,878.98 = 13,215.69/x
3. Step 3: Cross multiply
   23,827.50x = 32,878.98 × 13,215.69
4. Step 4: Simplify right side
   23,827.50x = 434,518,407.20
5. Step 5: Solve for x
   x = 434,518,407.20/23,827.50
6. Step 6: Final answer
   x = 18,236.00