Finding the Fourth Proportional to 8,191.04, 12,276.84 and 4,721.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191.04 : 12,276.84 = 4,721.12 : x
2. Step 2: Convert to fraction form
   8,191.04/12,276.84 = 4,721.12/x
3. Step 3: Cross multiply
   8,191.04x = 12,276.84 × 4,721.12
4. Step 4: Simplify right side
   8,191.04x = 57,960,434.86
5. Step 5: Solve for x
   x = 57,960,434.86/8,191.04
6. Step 6: Final answer
   x = 7,076.08