Finding the Fourth Proportional to 8,036.72, 11,091.32 and 5,921.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,036.72 : 11,091.32 = 5,921.91 : x
2. Step 2: Convert to fraction form
   8,036.72/11,091.32 = 5,921.91/x
3. Step 3: Cross multiply
   8,036.72x = 11,091.32 × 5,921.91
4. Step 4: Simplify right side
   8,036.72x = 65,681,798.82
5. Step 5: Solve for x
   x = 65,681,798.82/8,036.72
6. Step 6: Final answer
   x = 8,172.71