Finding the Fourth Proportional to 12,932.40, 17,846.22 and 7,905.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,932.40 : 17,846.22 = 7,905.06 : x
2. Step 2: Convert to fraction form
   12,932.40/17,846.22 = 7,905.06/x
3. Step 3: Cross multiply
   12,932.40x = 17,846.22 × 7,905.06
4. Step 4: Simplify right side
   12,932.40x = 141,075,439.87
5. Step 5: Solve for x
   x = 141,075,439.87/12,932.40
6. Step 6: Final answer
   x = 10,908.68