Finding the Fourth Proportional to 12,748.41, 19,123.43 and 3,388.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.41 : 19,123.43 = 3,388.28 : x
2. Step 2: Convert to fraction form
   12,748.41/19,123.43 = 3,388.28/x
3. Step 3: Cross multiply
   12,748.41x = 19,123.43 × 3,388.28
4. Step 4: Simplify right side
   12,748.41x = 64,795,422.84
5. Step 5: Solve for x
   x = 64,795,422.84/12,748.41
6. Step 6: Final answer
   x = 5,082.63