Finding the Fourth Proportional to 8,729.10, 12,047.88 and 5,191.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,729.10 : 12,047.88 = 5,191.62 : x
2. Step 2: Convert to fraction form
   8,729.10/12,047.88 = 5,191.62/x
3. Step 3: Cross multiply
   8,729.10x = 12,047.88 × 5,191.62
4. Step 4: Simplify right side
   8,729.10x = 62,548,014.77
5. Step 5: Solve for x
   x = 62,548,014.77/8,729.10
6. Step 6: Final answer
   x = 7,165.46