Finding the Fourth Proportional to 11,445.82, 17,164.41 and 5,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,445.82 : 17,164.41 = 5,285.50 : x
2. Step 2: Convert to fraction form
   11,445.82/17,164.41 = 5,285.50/x
3. Step 3: Cross multiply
   11,445.82x = 17,164.41 × 5,285.50
4. Step 4: Simplify right side
   11,445.82x = 90,722,489.06
5. Step 5: Solve for x
   x = 90,722,489.06/11,445.82
6. Step 6: Final answer
   x = 7,926.26