Finding the Fourth Proportional to 11,238.77, 16,852.77 and 5,310.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,238.77 : 16,852.77 = 5,310.72 : x
2. Step 2: Convert to fraction form
   11,238.77/16,852.77 = 5,310.72/x
3. Step 3: Cross multiply
   11,238.77x = 16,852.77 × 5,310.72
4. Step 4: Simplify right side
   11,238.77x = 89,500,322.78
5. Step 5: Solve for x
   x = 89,500,322.78/11,238.77
6. Step 6: Final answer
   x = 7,963.54