Finding the Fourth Proportional to 10,530.74, 15,785.01 and 3,508.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,530.74 : 15,785.01 = 3,508.88 : x
2. Step 2: Convert to fraction form
   10,530.74/15,785.01 = 3,508.88/x
3. Step 3: Cross multiply
   10,530.74x = 15,785.01 × 3,508.88
4. Step 4: Simplify right side
   10,530.74x = 55,387,705.89
5. Step 5: Solve for x
   x = 55,387,705.89/10,530.74
6. Step 6: Final answer
   x = 5,259.62