Finding the Fourth Proportional to 28,287.14, 42,436.16 and 10,755.59

Step by Step Solution

1. Step 1: Write the proportion equation
   28,287.14 : 42,436.16 = 10,755.59 : x
2. Step 2: Convert to fraction form
   28,287.14/42,436.16 = 10,755.59/x
3. Step 3: Cross multiply
   28,287.14x = 42,436.16 × 10,755.59
4. Step 4: Simplify right side
   28,287.14x = 456,426,071.11
5. Step 5: Solve for x
   x = 456,426,071.11/28,287.14
6. Step 6: Final answer
   x = 16,135.46