Finding the Fourth Proportional to 13,309.12, 18,371.83 and 8,002.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,309.12 : 18,371.83 = 8,002.91 : x
2. Step 2: Convert to fraction form
   13,309.12/18,371.83 = 8,002.91/x
3. Step 3: Cross multiply
   13,309.12x = 18,371.83 × 8,002.91
4. Step 4: Simplify right side
   13,309.12x = 147,028,010.17
5. Step 5: Solve for x
   x = 147,028,010.17/13,309.12
6. Step 6: Final answer
   x = 11,047.17