Finding the Fourth Proportional to 10,505.84, 15,759.61 and 3,485.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505.84 : 15,759.61 = 3,485.57 : x
2. Step 2: Convert to fraction form
   10,505.84/15,759.61 = 3,485.57/x
3. Step 3: Cross multiply
   10,505.84x = 15,759.61 × 3,485.57
4. Step 4: Simplify right side
   10,505.84x = 54,931,136.32
5. Step 5: Solve for x
   x = 54,931,136.32/10,505.84
6. Step 6: Final answer
   x = 5,228.63