Finding the Fourth Proportional to 6,404.93, 8,838.86 and 3,572.21

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404.93 : 8,838.86 = 3,572.21 : x
2. Step 2: Convert to fraction form
   6,404.93/8,838.86 = 3,572.21/x
3. Step 3: Cross multiply
   6,404.93x = 8,838.86 × 3,572.21
4. Step 4: Simplify right side
   6,404.93x = 31,574,246.22
5. Step 5: Solve for x
   x = 31,574,246.22/6,404.93
6. Step 6: Final answer
   x = 4,929.68