Finding the Fourth Proportional to 8,191.17, 12,278.00 and 4,238.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191.17 : 12,278.00 = 4,238.45 : x
2. Step 2: Convert to fraction form
   8,191.17/12,278.00 = 4,238.45/x
3. Step 3: Cross multiply
   8,191.17x = 12,278.00 × 4,238.45
4. Step 4: Simplify right side
   8,191.17x = 52,039,606.52
5. Step 5: Solve for x
   x = 52,039,606.52/8,191.17
6. Step 6: Final answer
   x = 6,353.13