Finding the Fourth Proportional to 7,085.43, 9,779.67 and 4,848.21

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085.43 : 9,779.67 = 4,848.21 : x
2. Step 2: Convert to fraction form
   7,085.43/9,779.67 = 4,848.21/x
3. Step 3: Cross multiply
   7,085.43x = 9,779.67 × 4,848.21
4. Step 4: Simplify right side
   7,085.43x = 47,413,893.89
5. Step 5: Solve for x
   x = 47,413,893.89/7,085.43
6. Step 6: Final answer
   x = 6,691.75