Finding the Fourth Proportional to 5,656.98, 7,803.36 and 3,980.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,656.98 : 7,803.36 = 3,980.82 : x
2. Step 2: Convert to fraction form
   5,656.98/7,803.36 = 3,980.82/x
3. Step 3: Cross multiply
   5,656.98x = 7,803.36 × 3,980.82
4. Step 4: Simplify right side
   5,656.98x = 31,063,771.56
5. Step 5: Solve for x
   x = 31,063,771.56/5,656.98
6. Step 6: Final answer
   x = 5,491.23