Finding the Fourth Proportional to 7,218,123.21, 10,823,641.86 and 3,570,638.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,218,123.21 : 10,823,641.86 = 3,570,638.81 : x
2. Step 2: Convert to fraction form
   7,218,123.21/10,823,641.86 = 3,570,638.81/x
3. Step 3: Cross multiply
   7,218,123.21x = 10,823,641.86 × 3,570,638.81
4. Step 4: Simplify right side
   7,218,123.21x = 38,647,315,636,738.38
5. Step 5: Solve for x
   x = 38,647,315,636,738.38/7,218,123.21
6. Step 6: Final answer
   x = 5,354,205.59