Finding the Fourth Proportional to 10,485.98, 14,470.38 and 5,705.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,485.98 : 14,470.38 = 5,705.72 : x
2. Step 2: Convert to fraction form
   10,485.98/14,470.38 = 5,705.72/x
3. Step 3: Cross multiply
   10,485.98x = 14,470.38 × 5,705.72
4. Step 4: Simplify right side
   10,485.98x = 82,563,864.22
5. Step 5: Solve for x
   x = 82,563,864.22/10,485.98
6. Step 6: Final answer
   x = 7,873.74