Finding the Fourth Proportional to 14,477.61, 21,721.28 and 4,618.29

Step by Step Solution

1. Step 1: Write the proportion equation
   14,477.61 : 21,721.28 = 4,618.29 : x
2. Step 2: Convert to fraction form
   14,477.61/21,721.28 = 4,618.29/x
3. Step 3: Cross multiply
   14,477.61x = 21,721.28 × 4,618.29
4. Step 4: Simplify right side
   14,477.61x = 100,315,147.12
5. Step 5: Solve for x
   x = 100,315,147.12/14,477.61
6. Step 6: Final answer
   x = 6,928.99