Finding the Fourth Proportional to 3,926.72, 5,887.24 and 1,980.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,926.72 : 5,887.24 = 1,980.29 : x
2. Step 2: Convert to fraction form
   3,926.72/5,887.24 = 1,980.29/x
3. Step 3: Cross multiply
   3,926.72x = 5,887.24 × 1,980.29
4. Step 4: Simplify right side
   3,926.72x = 11,658,442.50
5. Step 5: Solve for x
   x = 11,658,442.50/3,926.72
6. Step 6: Final answer
   x = 2,969.00