Finding the Fourth Proportional to 13,314.38, 19,971.71 and 3,453.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,314.38 : 19,971.71 = 3,453.06 : x
2. Step 2: Convert to fraction form
   13,314.38/19,971.71 = 3,453.06/x
3. Step 3: Cross multiply
   13,314.38x = 19,971.71 × 3,453.06
4. Step 4: Simplify right side
   13,314.38x = 68,963,434.42
5. Step 5: Solve for x
   x = 68,963,434.42/13,314.38
6. Step 6: Final answer
   x = 5,179.62