Finding the Fourth Proportional to 13,618,109.61, 18,792,711.18 and 7,423,103.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,618,109.61 : 18,792,711.18 = 7,423,103.25 : x
2. Step 2: Convert to fraction form
   13,618,109.61/18,792,711.18 = 7,423,103.25/x
3. Step 3: Cross multiply
   13,618,109.61x = 18,792,711.18 × 7,423,103.25
4. Step 4: Simplify right side
   13,618,109.61x = 139,500,235,436,569.33
5. Step 5: Solve for x
   x = 139,500,235,436,569.33/13,618,109.61
6. Step 6: Final answer
   x = 10,243,729.82