Finding the Fourth Proportional to 23,013.78, 34,465.30 and 13,123.07

Step by Step Solution

1. Step 1: Write the proportion equation
   23,013.78 : 34,465.30 = 13,123.07 : x
2. Step 2: Convert to fraction form
   23,013.78/34,465.30 = 13,123.07/x
3. Step 3: Cross multiply
   23,013.78x = 34,465.30 × 13,123.07
4. Step 4: Simplify right side
   23,013.78x = 452,290,544.47
5. Step 5: Solve for x
   x = 452,290,544.47/23,013.78
6. Step 6: Final answer
   x = 19,653.03