Finding the Fourth Proportional to 11,511.76, 17,263.98 and 3,718.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,511.76 : 17,263.98 = 3,718.78 : x
2. Step 2: Convert to fraction form
   11,511.76/17,263.98 = 3,718.78/x
3. Step 3: Cross multiply
   11,511.76x = 17,263.98 × 3,718.78
4. Step 4: Simplify right side
   11,511.76x = 64,200,943.54
5. Step 5: Solve for x
   x = 64,200,943.54/11,511.76
6. Step 6: Final answer
   x = 5,576.99