Finding the Fourth Proportional to 8,809.78, 13,214.00 and 3,260.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,809.78 : 13,214.00 = 3,260.52 : x
2. Step 2: Convert to fraction form
   8,809.78/13,214.00 = 3,260.52/x
3. Step 3: Cross multiply
   8,809.78x = 13,214.00 × 3,260.52
4. Step 4: Simplify right side
   8,809.78x = 43,084,428.91
5. Step 5: Solve for x
   x = 43,084,428.91/8,809.78
6. Step 6: Final answer
   x = 4,890.52