Finding the Fourth Proportional to 17,621.71, 26,436.31 and 5,774.63

Step by Step Solution

1. Step 1: Write the proportion equation
   17,621.71 : 26,436.31 = 5,774.63 : x
2. Step 2: Convert to fraction form
   17,621.71/26,436.31 = 5,774.63/x
3. Step 3: Cross multiply
   17,621.71x = 26,436.31 × 5,774.63
4. Step 4: Simplify right side
   17,621.71x = 152,659,762.20
5. Step 5: Solve for x
   x = 152,659,762.20/17,621.71
6. Step 6: Final answer
   x = 8,663.17