Finding the Fourth Proportional to 5,876.82, 8,811.72 and 1,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,876.82 : 8,811.72 = 1,980.72 : x
2. Step 2: Convert to fraction form
   5,876.82/8,811.72 = 1,980.72/x
3. Step 3: Cross multiply
   5,876.82x = 8,811.72 × 1,980.72
4. Step 4: Simplify right side
   5,876.82x = 17,453,550.04
5. Step 5: Solve for x
   x = 17,453,550.04/5,876.82
6. Step 6: Final answer
   x = 2,969.90