Finding the Fourth Proportional to 8,760.15, 13,131.72 and 3,493.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.15 : 13,131.72 = 3,493.63 : x
2. Step 2: Convert to fraction form
   8,760.15/13,131.72 = 3,493.63/x
3. Step 3: Cross multiply
   8,760.15x = 13,131.72 × 3,493.63
4. Step 4: Simplify right side
   8,760.15x = 45,877,387.36
5. Step 5: Solve for x
   x = 45,877,387.36/8,760.15
6. Step 6: Final answer
   x = 5,237.06