Finding the Fourth Proportional to 12,178,906.29, 18,266,151.78 and 4,892,072.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,178,906.29 : 18,266,151.78 = 4,892,072.58 : x
2. Step 2: Convert to fraction form
   12,178,906.29/18,266,151.78 = 4,892,072.58/x
3. Step 3: Cross multiply
   12,178,906.29x = 18,266,151.78 × 4,892,072.58
4. Step 4: Simplify right side
   12,178,906.29x = 89,359,340,265,056.20
5. Step 5: Solve for x
   x = 89,359,340,265,056.20/12,178,906.29
6. Step 6: Final answer
   x = 7,337,222.09