Finding the Fourth Proportional to 11,603.15, 17,405.73 and 3,706.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,603.15 : 17,405.73 = 3,706.79 : x
2. Step 2: Convert to fraction form
   11,603.15/17,405.73 = 3,706.79/x
3. Step 3: Cross multiply
   11,603.15x = 17,405.73 × 3,706.79
4. Step 4: Simplify right side
   11,603.15x = 64,519,298.88
5. Step 5: Solve for x
   x = 64,519,298.88/11,603.15
6. Step 6: Final answer
   x = 5,560.50