Finding the Fourth Proportional to 11,913.36, 17,864.25 and 3,591.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,913.36 : 17,864.25 = 3,591.83 : x
2. Step 2: Convert to fraction form
   11,913.36/17,864.25 = 3,591.83/x
3. Step 3: Cross multiply
   11,913.36x = 17,864.25 × 3,591.83
4. Step 4: Simplify right side
   11,913.36x = 64,165,259.76
5. Step 5: Solve for x
   x = 64,165,259.76/11,913.36
6. Step 6: Final answer
   x = 5,385.99