Finding the Fourth Proportional to 22,580,830.83, 31,159,298.12 and 12,789,320.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,580,830.83 : 31,159,298.12 = 12,789,320.79 : x
2. Step 2: Convert to fraction form
   22,580,830.83/31,159,298.12 = 12,789,320.79/x
3. Step 3: Cross multiply
   22,580,830.83x = 31,159,298.12 × 12,789,320.79
4. Step 4: Simplify right side
   22,580,830.83x = 398,506,259,183,977.25
5. Step 5: Solve for x
   x = 398,506,259,183,977.25/22,580,830.83
6. Step 6: Final answer
   x = 17,647,989.23