Finding the Fourth Proportional to 23,616.81, 32,590.53 and 12,861.27

Step by Step Solution

1. Step 1: Write the proportion equation
   23,616.81 : 32,590.53 = 12,861.27 : x
2. Step 2: Convert to fraction form
   23,616.81/32,590.53 = 12,861.27/x
3. Step 3: Cross multiply
   23,616.81x = 32,590.53 × 12,861.27
4. Step 4: Simplify right side
   23,616.81x = 419,155,605.77
5. Step 5: Solve for x
   x = 419,155,605.77/23,616.81
6. Step 6: Final answer
   x = 17,748.19