Finding the Fourth Proportional to 13,308.96, 18,355.06 and 8,002.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.96 : 18,355.06 = 8,002.78 : x
2. Step 2: Convert to fraction form
   13,308.96/18,355.06 = 8,002.78/x
3. Step 3: Cross multiply
   13,308.96x = 18,355.06 × 8,002.78
4. Step 4: Simplify right side
   13,308.96x = 146,891,507.07
5. Step 5: Solve for x
   x = 146,891,507.07/13,308.96
6. Step 6: Final answer
   x = 11,037.04