Finding the Fourth Proportional to 12,139,078.25, 18,207,042.74 and 5,753,388.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139,078.25 : 18,207,042.74 = 5,753,388.17 : x
2. Step 2: Convert to fraction form
   12,139,078.25/18,207,042.74 = 5,753,388.17/x
3. Step 3: Cross multiply
   12,139,078.25x = 18,207,042.74 × 5,753,388.17
4. Step 4: Simplify right side
   12,139,078.25x = 104,752,184,311,000.38
5. Step 5: Solve for x
   x = 104,752,184,311,000.38/12,139,078.25
6. Step 6: Final answer
   x = 8,629,335.95