Finding the Fourth Proportional to 11,377.02, 17,061.87 and 3,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,377.02 : 17,061.87 = 3,980.10 : x
2. Step 2: Convert to fraction form
   11,377.02/17,061.87 = 3,980.10/x
3. Step 3: Cross multiply
   11,377.02x = 17,061.87 × 3,980.10
4. Step 4: Simplify right side
   11,377.02x = 67,907,948.79
5. Step 5: Solve for x
   x = 67,907,948.79/11,377.02
6. Step 6: Final answer
   x = 5,968.87