Finding the Fourth Proportional to 13,012.17, 17,950.16 and 7,906.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.17 : 17,950.16 = 7,906.31 : x
2. Step 2: Convert to fraction form
   13,012.17/17,950.16 = 7,906.31/x
3. Step 3: Cross multiply
   13,012.17x = 17,950.16 × 7,906.31
4. Step 4: Simplify right side
   13,012.17x = 141,919,439.76
5. Step 5: Solve for x
   x = 141,919,439.76/13,012.17
6. Step 6: Final answer
   x = 10,906.67