Finding the Fourth Proportional to 12,109.32, 18,151.74 and 4,709.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.32 : 18,151.74 = 4,709.16 : x
2. Step 2: Convert to fraction form
   12,109.32/18,151.74 = 4,709.16/x
3. Step 3: Cross multiply
   12,109.32x = 18,151.74 × 4,709.16
4. Step 4: Simplify right side
   12,109.32x = 85,479,447.94
5. Step 5: Solve for x
   x = 85,479,447.94/12,109.32
6. Step 6: Final answer
   x = 7,058.98