Finding the Fourth Proportional to 8,788.89, 13,185.31 and 2,945.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.89 : 13,185.31 = 2,945.35 : x
2. Step 2: Convert to fraction form
   8,788.89/13,185.31 = 2,945.35/x
3. Step 3: Cross multiply
   8,788.89x = 13,185.31 × 2,945.35
4. Step 4: Simplify right side
   8,788.89x = 38,835,312.48
5. Step 5: Solve for x
   x = 38,835,312.48/8,788.89
6. Step 6: Final answer
   x = 4,418.68