Finding the Fourth Proportional to 12,144,105.57, 18,221,193.32 and 5,317,155.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,144,105.57 : 18,221,193.32 = 5,317,155.03 : x
2. Step 2: Convert to fraction form
   12,144,105.57/18,221,193.32 = 5,317,155.03/x
3. Step 3: Cross multiply
   12,144,105.57x = 18,221,193.32 × 5,317,155.03
4. Step 4: Simplify right side
   12,144,105.57x = 96,884,909,714,040.41
5. Step 5: Solve for x
   x = 96,884,909,714,040.41/12,144,105.57
6. Step 6: Final answer
   x = 7,977,937.05