Finding the Fourth Proportional to 12,150.47, 18,194.15 and 10,406.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.47 : 18,194.15 = 10,406.70 : x
2. Step 2: Convert to fraction form
   12,150.47/18,194.15 = 10,406.70/x
3. Step 3: Cross multiply
   12,150.47x = 18,194.15 × 10,406.70
4. Step 4: Simplify right side
   12,150.47x = 189,341,086.82
5. Step 5: Solve for x
   x = 189,341,086.82/12,150.47
6. Step 6: Final answer
   x = 15,583.02