Finding the Fourth Proportional to 11,411.42, 17,117.61 and 3,620.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.42 : 17,117.61 = 3,620.06 : x
2. Step 2: Convert to fraction form
   11,411.42/17,117.61 = 3,620.06/x
3. Step 3: Cross multiply
   11,411.42x = 17,117.61 × 3,620.06
4. Step 4: Simplify right side
   11,411.42x = 61,966,775.26
5. Step 5: Solve for x
   x = 61,966,775.26/11,411.42
6. Step 6: Final answer
   x = 5,430.24