Finding the Fourth Proportional to 28,119.34, 42,185.29 and 10,589.32

Step by Step Solution

1. Step 1: Write the proportion equation
   28,119.34 : 42,185.29 = 10,589.32 : x
2. Step 2: Convert to fraction form
   28,119.34/42,185.29 = 10,589.32/x
3. Step 3: Cross multiply
   28,119.34x = 42,185.29 × 10,589.32
4. Step 4: Simplify right side
   28,119.34x = 446,713,535.10
5. Step 5: Solve for x
   x = 446,713,535.10/28,119.34
6. Step 6: Final answer
   x = 15,886.34