Finding the Fourth Proportional to 11,100.72, 16,656.48 and 5,250.36

Step by Step Solution

1. Step 1: Write the proportion equation
   11,100.72 : 16,656.48 = 5,250.36 : x
2. Step 2: Convert to fraction form
   11,100.72/16,656.48 = 5,250.36/x
3. Step 3: Cross multiply
   11,100.72x = 16,656.48 × 5,250.36
4. Step 4: Simplify right side
   11,100.72x = 87,452,516.33
5. Step 5: Solve for x
   x = 87,452,516.33/11,100.72
6. Step 6: Final answer
   x = 7,878.09