Finding the Fourth Proportional to 6,443.06, 8,889.59 and 3,925.23

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.06 : 8,889.59 = 3,925.23 : x
2. Step 2: Convert to fraction form
   6,443.06/8,889.59 = 3,925.23/x
3. Step 3: Cross multiply
   6,443.06x = 8,889.59 × 3,925.23
4. Step 4: Simplify right side
   6,443.06x = 34,893,665.73
5. Step 5: Solve for x
   x = 34,893,665.73/6,443.06
6. Step 6: Final answer
   x = 5,415.70