Finding the Fourth Proportional to 14,275.42, 21,398.54 and 4,912.64

Step by Step Solution

1. Step 1: Write the proportion equation
   14,275.42 : 21,398.54 = 4,912.64 : x
2. Step 2: Convert to fraction form
   14,275.42/21,398.54 = 4,912.64/x
3. Step 3: Cross multiply
   14,275.42x = 21,398.54 × 4,912.64
4. Step 4: Simplify right side
   14,275.42x = 105,123,323.55
5. Step 5: Solve for x
   x = 105,123,323.55/14,275.42
6. Step 6: Final answer
   x = 7,363.94