Finding the Fourth Proportional to 12,911.82, 19,382.32 and 5,126.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,911.82 : 19,382.32 = 5,126.10 : x
2. Step 2: Convert to fraction form
   12,911.82/19,382.32 = 5,126.10/x
3. Step 3: Cross multiply
   12,911.82x = 19,382.32 × 5,126.10
4. Step 4: Simplify right side
   12,911.82x = 99,355,710.55
5. Step 5: Solve for x
   x = 99,355,710.55/12,911.82
6. Step 6: Final answer
   x = 7,694.94