Finding the Fourth Proportional to 8,754, 12,077.60 and 5,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,754 : 12,077.60 = 5,216.72 : x
2. Step 2: Convert to fraction form
   8,754/12,077.60 = 5,216.72/x
3. Step 3: Cross multiply
   8,754x = 12,077.60 × 5,216.72
4. Step 4: Simplify right side
   8,754x = 63,005,457.47
5. Step 5: Solve for x
   x = 63,005,457.47/8,754
6. Step 6: Final answer
   x = 7,197.33