Finding the Fourth Proportional to 11,374.16, 17,063.04 and 3,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,374.16 : 17,063.04 = 3,980.72 : x
2. Step 2: Convert to fraction form
   11,374.16/17,063.04 = 3,980.72/x
3. Step 3: Cross multiply
   11,374.16x = 17,063.04 × 3,980.72
4. Step 4: Simplify right side
   11,374.16x = 67,923,184.59
5. Step 5: Solve for x
   x = 67,923,184.59/11,374.16
6. Step 6: Final answer
   x = 5,971.71