Finding the Fourth Proportional to 14,293.68, 21,443.60 and 7,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,293.68 : 21,443.60 = 7,274.72 : x
2. Step 2: Convert to fraction form
   14,293.68/21,443.60 = 7,274.72/x
3. Step 3: Cross multiply
   14,293.68x = 21,443.60 × 7,274.72
4. Step 4: Simplify right side
   14,293.68x = 155,996,185.79
5. Step 5: Solve for x
   x = 155,996,185.79/14,293.68
6. Step 6: Final answer
   x = 10,913.65