Finding the Fourth Proportional to 6,443.52, 8,890.16 and 4,085.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.52 : 8,890.16 = 4,085.06 : x
2. Step 2: Convert to fraction form
   6,443.52/8,890.16 = 4,085.06/x
3. Step 3: Cross multiply
   6,443.52x = 8,890.16 × 4,085.06
4. Step 4: Simplify right side
   6,443.52x = 36,316,837.01
5. Step 5: Solve for x
   x = 36,316,837.01/6,443.52
6. Step 6: Final answer
   x = 5,636.18