Finding the Fourth Proportional to 7,820.71, 10,796.08 and 4,991.83

Step by Step Solution

1. Step 1: Write the proportion equation
   7,820.71 : 10,796.08 = 4,991.83 : x
2. Step 2: Convert to fraction form
   7,820.71/10,796.08 = 4,991.83/x
3. Step 3: Cross multiply
   7,820.71x = 10,796.08 × 4,991.83
4. Step 4: Simplify right side
   7,820.71x = 53,892,210.54
5. Step 5: Solve for x
   x = 53,892,210.54/7,820.71
6. Step 6: Final answer
   x = 6,890.96