Finding the Fourth Proportional to 13,878.27, 19,280.39 and 13,748.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,878.27 : 19,280.39 = 13,748.56 : x
2. Step 2: Convert to fraction form
   13,878.27/19,280.39 = 13,748.56/x
3. Step 3: Cross multiply
   13,878.27x = 19,280.39 × 13,748.56
4. Step 4: Simplify right side
   13,878.27x = 265,077,481.79
5. Step 5: Solve for x
   x = 265,077,481.79/13,878.27
6. Step 6: Final answer
   x = 19,100.18