Finding the Fourth Proportional to 12,403.10, 17,065.50 and 10,719.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,403.10 : 17,065.50 = 10,719.12 : x
2. Step 2: Convert to fraction form
   12,403.10/17,065.50 = 10,719.12/x
3. Step 3: Cross multiply
   12,403.10x = 17,065.50 × 10,719.12
4. Step 4: Simplify right side
   12,403.10x = 182,927,142.36
5. Step 5: Solve for x
   x = 182,927,142.36/12,403.10
6. Step 6: Final answer
   x = 14,748.50