Finding the Fourth Proportional to 9,721.68, 14,580.90 and 3,152.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,721.68 : 14,580.90 = 3,152.58 : x
2. Step 2: Convert to fraction form
   9,721.68/14,580.90 = 3,152.58/x
3. Step 3: Cross multiply
   9,721.68x = 14,580.90 × 3,152.58
4. Step 4: Simplify right side
   9,721.68x = 45,967,453.72
5. Step 5: Solve for x
   x = 45,967,453.72/9,721.68
6. Step 6: Final answer
   x = 4,728.34