Finding the Fourth Proportional to 28,090.98, 42,142.74 and 10,560.96

Step by Step Solution

1. Step 1: Write the proportion equation
   28,090.98 : 42,142.74 = 10,560.96 : x
2. Step 2: Convert to fraction form
   28,090.98/42,142.74 = 10,560.96/x
3. Step 3: Cross multiply
   28,090.98x = 42,142.74 × 10,560.96
4. Step 4: Simplify right side
   28,090.98x = 445,067,791.43
5. Step 5: Solve for x
   x = 445,067,791.43/28,090.98
6. Step 6: Final answer
   x = 15,843.80