Finding the Fourth Proportional to 12,923.31, 19,359.45 and 10,136.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,923.31 : 19,359.45 = 10,136.10 : x
2. Step 2: Convert to fraction form
   12,923.31/19,359.45 = 10,136.10/x
3. Step 3: Cross multiply
   12,923.31x = 19,359.45 × 10,136.10
4. Step 4: Simplify right side
   12,923.31x = 196,229,321.15
5. Step 5: Solve for x
   x = 196,229,321.15/12,923.31
6. Step 6: Final answer
   x = 15,184.14