Finding the Fourth Proportional to 28,233.84, 42,345.61 and 8,507.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,233.84 : 42,345.61 = 8,507.10 : x
2. Step 2: Convert to fraction form
   28,233.84/42,345.61 = 8,507.10/x
3. Step 3: Cross multiply
   28,233.84x = 42,345.61 × 8,507.10
4. Step 4: Simplify right side
   28,233.84x = 360,238,338.83
5. Step 5: Solve for x
   x = 360,238,338.83/28,233.84
6. Step 6: Final answer
   x = 12,759.10