Finding the Fourth Proportional to 23,663.59, 32,654.69 and 12,908.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,663.59 : 32,654.69 = 12,908.20 : x
2. Step 2: Convert to fraction form
   23,663.59/32,654.69 = 12,908.20/x
3. Step 3: Cross multiply
   23,663.59x = 32,654.69 × 12,908.20
4. Step 4: Simplify right side
   23,663.59x = 421,513,269.46
5. Step 5: Solve for x
   x = 421,513,269.46/23,663.59
6. Step 6: Final answer
   x = 17,812.74