Finding the Fourth Proportional to 11,723.31, 17,572.17 and 4,321.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,723.31 : 17,572.17 = 4,321.53 : x
2. Step 2: Convert to fraction form
   11,723.31/17,572.17 = 4,321.53/x
3. Step 3: Cross multiply
   11,723.31x = 17,572.17 × 4,321.53
4. Step 4: Simplify right side
   11,723.31x = 75,938,659.82
5. Step 5: Solve for x
   x = 75,938,659.82/11,723.31
6. Step 6: Final answer
   x = 6,477.58