Finding the Fourth Proportional to 11,052.06, 16,496.72 and 10,128.66

Step by Step Solution

1. Step 1: Write the proportion equation
   11,052.06 : 16,496.72 = 10,128.66 : x
2. Step 2: Convert to fraction form
   11,052.06/16,496.72 = 10,128.66/x
3. Step 3: Cross multiply
   11,052.06x = 16,496.72 × 10,128.66
4. Step 4: Simplify right side
   11,052.06x = 167,089,617.35
5. Step 5: Solve for x
   x = 167,089,617.35/11,052.06
6. Step 6: Final answer
   x = 15,118.41