Finding the Fourth Proportional to 10,505.59, 15,760.81 and 3,485.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505.59 : 15,760.81 = 3,485.08 : x
2. Step 2: Convert to fraction form
   10,505.59/15,760.81 = 3,485.08/x
3. Step 3: Cross multiply
   10,505.59x = 15,760.81 × 3,485.08
4. Step 4: Simplify right side
   10,505.59x = 54,927,683.71
5. Step 5: Solve for x
   x = 54,927,683.71/10,505.59
6. Step 6: Final answer
   x = 5,228.42