Finding the Fourth Proportional to 13,900.74, 19,183.50 and 7,613.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,900.74 : 19,183.50 = 7,613.12 : x
2. Step 2: Convert to fraction form
   13,900.74/19,183.50 = 7,613.12/x
3. Step 3: Cross multiply
   13,900.74x = 19,183.50 × 7,613.12
4. Step 4: Simplify right side
   13,900.74x = 146,046,191.60
5. Step 5: Solve for x
   x = 146,046,191.60/13,900.74
6. Step 6: Final answer
   x = 10,506.36