Finding the Fourth Proportional to 14,388.10, 21,583.59 and 5,151.94

Step by Step Solution

1. Step 1: Write the proportion equation
   14,388.10 : 21,583.59 = 5,151.94 : x
2. Step 2: Convert to fraction form
   14,388.10/21,583.59 = 5,151.94/x
3. Step 3: Cross multiply
   14,388.10x = 21,583.59 × 5,151.94
4. Step 4: Simplify right side
   14,388.10x = 111,197,360.66
5. Step 5: Solve for x
   x = 111,197,360.66/14,388.10
6. Step 6: Final answer
   x = 7,728.43