Finding the Fourth Proportional to 10,287.72, 15,429.30 and 2,892.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.72 : 15,429.30 = 2,892.93 : x
2. Step 2: Convert to fraction form
   10,287.72/15,429.30 = 2,892.93/x
3. Step 3: Cross multiply
   10,287.72x = 15,429.30 × 2,892.93
4. Step 4: Simplify right side
   10,287.72x = 44,635,884.85
5. Step 5: Solve for x
   x = 44,635,884.85/10,287.72
6. Step 6: Final answer
   x = 4,338.75