Finding the Fourth Proportional to 19,581.96, 29,360.46 and 12,910.76

Step by Step Solution

1. Step 1: Write the proportion equation
   19,581.96 : 29,360.46 = 12,910.76 : x
2. Step 2: Convert to fraction form
   19,581.96/29,360.46 = 12,910.76/x
3. Step 3: Cross multiply
   19,581.96x = 29,360.46 × 12,910.76
4. Step 4: Simplify right side
   19,581.96x = 379,065,852.55
5. Step 5: Solve for x
   x = 379,065,852.55/19,581.96
6. Step 6: Final answer
   x = 19,357.91