Finding the Fourth Proportional to 12,418,958.90, 18,627,128.04 and 3,321,974.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,418,958.90 : 18,627,128.04 = 3,321,974.54 : x
2. Step 2: Convert to fraction form
   12,418,958.90/18,627,128.04 = 3,321,974.54/x
3. Step 3: Cross multiply
   12,418,958.90x = 18,627,128.04 × 3,321,974.54
4. Step 4: Simplify right side
   12,418,958.90x = 61,878,845,102,200.10
5. Step 5: Solve for x
   x = 61,878,845,102,200.10/12,418,958.90
6. Step 6: Final answer
   x = 4,982,611.31