Finding the Fourth Proportional to 11,608.50, 17,415.64 and 3,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,608.50 : 17,415.64 = 3,400.50 : x
2. Step 2: Convert to fraction form
   11,608.50/17,415.64 = 3,400.50/x
3. Step 3: Cross multiply
   11,608.50x = 17,415.64 × 3,400.50
4. Step 4: Simplify right side
   11,608.50x = 59,221,883.82
5. Step 5: Solve for x
   x = 59,221,883.82/11,608.50
6. Step 6: Final answer
   x = 5,101.60