Finding the Fourth Proportional to 13,255.84, 19,883.31 and 3,395.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.84 : 19,883.31 = 3,395.21 : x
2. Step 2: Convert to fraction form
   13,255.84/19,883.31 = 3,395.21/x
3. Step 3: Cross multiply
   13,255.84x = 19,883.31 × 3,395.21
4. Step 4: Simplify right side
   13,255.84x = 67,507,900.80
5. Step 5: Solve for x
   x = 67,507,900.80/13,255.84
6. Step 6: Final answer
   x = 5,092.69