Finding the Fourth Proportional to 11,378.07, 17,063.76 and 3,981.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,378.07 : 17,063.76 = 3,981.15 : x
2. Step 2: Convert to fraction form
   11,378.07/17,063.76 = 3,981.15/x
3. Step 3: Cross multiply
   11,378.07x = 17,063.76 × 3,981.15
4. Step 4: Simplify right side
   11,378.07x = 67,933,388.12
5. Step 5: Solve for x
   x = 67,933,388.12/11,378.07
6. Step 6: Final answer
   x = 5,970.55