Finding the Fourth Proportional to 19,389.72, 29,046.50 and 12,795.78

Step by Step Solution

1. Step 1: Write the proportion equation
   19,389.72 : 29,046.50 = 12,795.78 : x
2. Step 2: Convert to fraction form
   19,389.72/29,046.50 = 12,795.78/x
3. Step 3: Cross multiply
   19,389.72x = 29,046.50 × 12,795.78
4. Step 4: Simplify right side
   19,389.72x = 371,672,623.77
5. Step 5: Solve for x
   x = 371,672,623.77/19,389.72
6. Step 6: Final answer
   x = 19,168.54