Finding the Fourth Proportional to 11,019.12, 16,548.42 and 10,140

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.12 : 16,548.42 = 10,140 : x
2. Step 2: Convert to fraction form
   11,019.12/16,548.42 = 10,140/x
3. Step 3: Cross multiply
   11,019.12x = 16,548.42 × 10,140
4. Step 4: Simplify right side
   11,019.12x = 167,800,978.80
5. Step 5: Solve for x
   x = 167,800,978.80/11,019.12
6. Step 6: Final answer
   x = 15,228.17