Finding the Fourth Proportional to 11,406.16, 17,106.66 and 3,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,406.16 : 17,106.66 = 3,610.72 : x
2. Step 2: Convert to fraction form
   11,406.16/17,106.66 = 3,610.72/x
3. Step 3: Cross multiply
   11,406.16x = 17,106.66 × 3,610.72
4. Step 4: Simplify right side
   11,406.16x = 61,767,359.40
5. Step 5: Solve for x
   x = 61,767,359.40/11,406.16
6. Step 6: Final answer
   x = 5,415.26