Finding the Fourth Proportional to 13,735.50, 18,958.02 and 7,767.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,735.50 : 18,958.02 = 7,767.42 : x
2. Step 2: Convert to fraction form
   13,735.50/18,958.02 = 7,767.42/x
3. Step 3: Cross multiply
   13,735.50x = 18,958.02 × 7,767.42
4. Step 4: Simplify right side
   13,735.50x = 147,254,903.71
5. Step 5: Solve for x
   x = 147,254,903.71/13,735.50
6. Step 6: Final answer
   x = 10,720.75