Finding the Fourth Proportional to 28,080.27, 42,126.69 and 10,550.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,080.27 : 42,126.69 = 10,550.25 : x
2. Step 2: Convert to fraction form
   28,080.27/42,126.69 = 10,550.25/x
3. Step 3: Cross multiply
   28,080.27x = 42,126.69 × 10,550.25
4. Step 4: Simplify right side
   28,080.27x = 444,447,111.17
5. Step 5: Solve for x
   x = 444,447,111.17/28,080.27
6. Step 6: Final answer
   x = 15,827.74