Finding the Fourth Proportional to 12,647.86, 17,454.84 and 7,272.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.86 : 17,454.84 = 7,272.01 : x
2. Step 2: Convert to fraction form
   12,647.86/17,454.84 = 7,272.01/x
3. Step 3: Cross multiply
   12,647.86x = 17,454.84 × 7,272.01
4. Step 4: Simplify right side
   12,647.86x = 126,931,806.48
5. Step 5: Solve for x
   x = 126,931,806.48/12,647.86
6. Step 6: Final answer
   x = 10,035.83