Finding the Fourth Proportional to 6,401.78, 8,834.15 and 3,569.46

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.78 : 8,834.15 = 3,569.46 : x
2. Step 2: Convert to fraction form
   6,401.78/8,834.15 = 3,569.46/x
3. Step 3: Cross multiply
   6,401.78x = 8,834.15 × 3,569.46
4. Step 4: Simplify right side
   6,401.78x = 31,533,127.21
5. Step 5: Solve for x
   x = 31,533,127.21/6,401.78
6. Step 6: Final answer
   x = 4,925.69