Finding the Fourth Proportional to 21,969.50, 30,316.41 and 12,410.87

Step by Step Solution

1. Step 1: Write the proportion equation
   21,969.50 : 30,316.41 = 12,410.87 : x
2. Step 2: Convert to fraction form
   21,969.50/30,316.41 = 12,410.87/x
3. Step 3: Cross multiply
   21,969.50x = 30,316.41 × 12,410.87
4. Step 4: Simplify right side
   21,969.50x = 376,252,871.79
5. Step 5: Solve for x
   x = 376,252,871.79/21,969.50
6. Step 6: Final answer
   x = 17,126.15