Finding the Fourth Proportional to 11,381.50, 17,074.79 and 3,485.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,381.50 : 17,074.79 = 3,485.13 : x
2. Step 2: Convert to fraction form
   11,381.50/17,074.79 = 3,485.13/x
3. Step 3: Cross multiply
   11,381.50x = 17,074.79 × 3,485.13
4. Step 4: Simplify right side
   11,381.50x = 59,507,777.50
5. Step 5: Solve for x
   x = 59,507,777.50/11,381.50
6. Step 6: Final answer
   x = 5,228.47