Finding the Fourth Proportional to 11,372.16, 17,060.04 and 3,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,372.16 : 17,060.04 = 3,978.72 : x
2. Step 2: Convert to fraction form
   11,372.16/17,060.04 = 3,978.72/x
3. Step 3: Cross multiply
   11,372.16x = 17,060.04 × 3,978.72
4. Step 4: Simplify right side
   11,372.16x = 67,877,122.35
5. Step 5: Solve for x
   x = 67,877,122.35/11,372.16
6. Step 6: Final answer
   x = 5,968.71