Finding the Fourth Proportional to 7,112.34, 9,815.85 and 4,985.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.34 : 9,815.85 = 4,985.82 : x
2. Step 2: Convert to fraction form
   7,112.34/9,815.85 = 4,985.82/x
3. Step 3: Cross multiply
   7,112.34x = 9,815.85 × 4,985.82
4. Step 4: Simplify right side
   7,112.34x = 48,940,061.25
5. Step 5: Solve for x
   x = 48,940,061.25/7,112.34
6. Step 6: Final answer
   x = 6,881.01