Finding the Fourth Proportional to 17,621.48, 26,439.54 and 7,240.52

Step by Step Solution

1. Step 1: Write the proportion equation
   17,621.48 : 26,439.54 = 7,240.52 : x
2. Step 2: Convert to fraction form
   17,621.48/26,439.54 = 7,240.52/x
3. Step 3: Cross multiply
   17,621.48x = 26,439.54 × 7,240.52
4. Step 4: Simplify right side
   17,621.48x = 191,436,018.16
5. Step 5: Solve for x
   x = 191,436,018.16/17,621.48
6. Step 6: Final answer
   x = 10,863.79