Finding the Fourth Proportional to 12,073.68, 18,113.76 and 5,148.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,073.68 : 18,113.76 = 5,148.72 : x
2. Step 2: Convert to fraction form
   12,073.68/18,113.76 = 5,148.72/x
3. Step 3: Cross multiply
   12,073.68x = 18,113.76 × 5,148.72
4. Step 4: Simplify right side
   12,073.68x = 93,262,678.39
5. Step 5: Solve for x
   x = 93,262,678.39/12,073.68
6. Step 6: Final answer
   x = 7,724.46