Finding the Fourth Proportional to 15,073.31, 22,609.62 and 3,980.78

Step by Step Solution

1. Step 1: Write the proportion equation
   15,073.31 : 22,609.62 = 3,980.78 : x
2. Step 2: Convert to fraction form
   15,073.31/22,609.62 = 3,980.78/x
3. Step 3: Cross multiply
   15,073.31x = 22,609.62 × 3,980.78
4. Step 4: Simplify right side
   15,073.31x = 90,003,923.10
5. Step 5: Solve for x
   x = 90,003,923.10/15,073.31
6. Step 6: Final answer
   x = 5,971.08