Finding the Fourth Proportional to 11,901.13, 17,856.86 and 5,661.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,901.13 : 17,856.86 = 5,661.09 : x
2. Step 2: Convert to fraction form
   11,901.13/17,856.86 = 5,661.09/x
3. Step 3: Cross multiply
   11,901.13x = 17,856.86 × 5,661.09
4. Step 4: Simplify right side
   11,901.13x = 101,089,263.27
5. Step 5: Solve for x
   x = 101,089,263.27/11,901.13
6. Step 6: Final answer
   x = 8,494.09