Finding the Fourth Proportional to 12,072,342.06, 18,110,313.72 and 3,986,172

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072,342.06 : 18,110,313.72 = 3,986,172 : x
2. Step 2: Convert to fraction form
   12,072,342.06/18,110,313.72 = 3,986,172/x
3. Step 3: Cross multiply
   12,072,342.06x = 18,110,313.72 × 3,986,172
4. Step 4: Simplify right side
   12,072,342.06x = 72,190,825,461,879.83
5. Step 5: Solve for x
   x = 72,190,825,461,879.83/12,072,342.06
6. Step 6: Final answer
   x = 5,979,852.55