Finding the Fourth Proportional to 11,378.88, 17,064.98 and 3,981.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,378.88 : 17,064.98 = 3,981.96 : x
2. Step 2: Convert to fraction form
   11,378.88/17,064.98 = 3,981.96/x
3. Step 3: Cross multiply
   11,378.88x = 17,064.98 × 3,981.96
4. Step 4: Simplify right side
   11,378.88x = 67,952,062.78
5. Step 5: Solve for x
   x = 67,952,062.78/11,378.88
6. Step 6: Final answer
   x = 5,971.77