Finding the Fourth Proportional to 12,906.13, 19,336.06 and 7,906

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906.13 : 19,336.06 = 7,906 : x
2. Step 2: Convert to fraction form
   12,906.13/19,336.06 = 7,906/x
3. Step 3: Cross multiply
   12,906.13x = 19,336.06 × 7,906
4. Step 4: Simplify right side
   12,906.13x = 152,870,850.83
5. Step 5: Solve for x
   x = 152,870,850.83/12,906.13
6. Step 6: Final answer
   x = 11,844.82