Finding the Fourth Proportional to 25,215.68, 37,718.17 and 17,718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,215.68 : 37,718.17 = 17,718.72 : x
2. Step 2: Convert to fraction form
   25,215.68/37,718.17 = 17,718.72/x
3. Step 3: Cross multiply
   25,215.68x = 37,718.17 × 17,718.72
4. Step 4: Simplify right side
   25,215.68x = 668,317,693.14
5. Step 5: Solve for x
   x = 668,317,693.14/25,215.68
6. Step 6: Final answer
   x = 26,504.05