Finding the Fourth Proportional to 17,679.44, 24,396.72 and 9,721.46

Step by Step Solution

1. Step 1: Write the proportion equation
   17,679.44 : 24,396.72 = 9,721.46 : x
2. Step 2: Convert to fraction form
   17,679.44/24,396.72 = 9,721.46/x
3. Step 3: Cross multiply
   17,679.44x = 24,396.72 × 9,721.46
4. Step 4: Simplify right side
   17,679.44x = 237,171,737.61
5. Step 5: Solve for x
   x = 237,171,737.61/17,679.44
6. Step 6: Final answer
   x = 13,415.12