Finding the Fourth Proportional to 10,485.82, 15,728.72 and 3,090.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,485.82 : 15,728.72 = 3,090.35 : x
2. Step 2: Convert to fraction form
   10,485.82/15,728.72 = 3,090.35/x
3. Step 3: Cross multiply
   10,485.82x = 15,728.72 × 3,090.35
4. Step 4: Simplify right side
   10,485.82x = 48,607,273.72
5. Step 5: Solve for x
   x = 48,607,273.72/10,485.82
6. Step 6: Final answer
   x = 4,635.52