Finding the Fourth Proportional to 13,510.42, 18,647.49 and 7,923.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.42 : 18,647.49 = 7,923.22 : x
2. Step 2: Convert to fraction form
   13,510.42/18,647.49 = 7,923.22/x
3. Step 3: Cross multiply
   13,510.42x = 18,647.49 × 7,923.22
4. Step 4: Simplify right side
   13,510.42x = 147,748,165.72
5. Step 5: Solve for x
   x = 147,748,165.72/13,510.42
6. Step 6: Final answer
   x = 10,935.87