Finding the Fourth Proportional to 12,019.58, 16,585.12 and 7,238.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,019.58 : 16,585.12 = 7,238.35 : x
2. Step 2: Convert to fraction form
   12,019.58/16,585.12 = 7,238.35/x
3. Step 3: Cross multiply
   12,019.58x = 16,585.12 × 7,238.35
4. Step 4: Simplify right side
   12,019.58x = 120,048,903.35
5. Step 5: Solve for x
   x = 120,048,903.35/12,019.58
6. Step 6: Final answer
   x = 9,987.78