Finding the Fourth Proportional to 12,820,494.56, 17,691,581.71 and 7,018,153.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820,494.56 : 17,691,581.71 = 7,018,153.92 : x
2. Step 2: Convert to fraction form
   12,820,494.56/17,691,581.71 = 7,018,153.92/x
3. Step 3: Cross multiply
   12,820,494.56x = 17,691,581.71 × 7,018,153.92
4. Step 4: Simplify right side
   12,820,494.56x = 124,162,243,511,491.41
5. Step 5: Solve for x
   x = 124,162,243,511,491.41/12,820,494.56
6. Step 6: Final answer
   x = 9,684,668.79