Finding the Fourth Proportional to 13,404.19, 18,500.16 and 7,738.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,404.19 : 18,500.16 = 7,738.14 : x
2. Step 2: Convert to fraction form
   13,404.19/18,500.16 = 7,738.14/x
3. Step 3: Cross multiply
   13,404.19x = 18,500.16 × 7,738.14
4. Step 4: Simplify right side
   13,404.19x = 143,156,789.41
5. Step 5: Solve for x
   x = 143,156,789.41/13,404.19
6. Step 6: Final answer
   x = 10,680.01