Finding the Fourth Proportional to 28,234.72, 38,971.56 and 17,618.08

Step by Step Solution

1. Step 1: Write the proportion equation
   28,234.72 : 38,971.56 = 17,618.08 : x
2. Step 2: Convert to fraction form
   28,234.72/38,971.56 = 17,618.08/x
3. Step 3: Cross multiply
   28,234.72x = 38,971.56 × 17,618.08
4. Step 4: Simplify right side
   28,234.72x = 686,604,061.80
5. Step 5: Solve for x
   x = 686,604,061.80/28,234.72
6. Step 6: Final answer
   x = 24,317.72