Finding the Fourth Proportional to 11,013.94, 15,178.25 and 10,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.94 : 15,178.25 = 10,811.50 : x
2. Step 2: Convert to fraction form
   11,013.94/15,178.25 = 10,811.50/x
3. Step 3: Cross multiply
   11,013.94x = 15,178.25 × 10,811.50
4. Step 4: Simplify right side
   11,013.94x = 164,099,649.88
5. Step 5: Solve for x
   x = 164,099,649.88/11,013.94
6. Step 6: Final answer
   x = 14,899.27