Finding the Fourth Proportional to 8,139,363.18, 12,199,757.31 and 3,278,557.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,363.18 : 12,199,757.31 = 3,278,557.02 : x
2. Step 2: Convert to fraction form
   8,139,363.18/12,199,757.31 = 3,278,557.02/x
3. Step 3: Cross multiply
   8,139,363.18x = 12,199,757.31 × 3,278,557.02
4. Step 4: Simplify right side
   8,139,363.18x = 39,997,599,970,996.82
5. Step 5: Solve for x
   x = 39,997,599,970,996.82/8,139,363.18
6. Step 6: Final answer
   x = 4,914,094.52