Finding the Fourth Proportional to 21,997,722.59, 30,354,851.27 and 13,055,290.79

Step by Step Solution

1. Step 1: Write the proportion equation
   21,997,722.59 : 30,354,851.27 = 13,055,290.79 : x
2. Step 2: Convert to fraction form
   21,997,722.59/30,354,851.27 = 13,055,290.79/x
3. Step 3: Cross multiply
   21,997,722.59x = 30,354,851.27 × 13,055,290.79
4. Step 4: Simplify right side
   21,997,722.59x = 396,291,410,151,774.31
5. Step 5: Solve for x
   x = 396,291,410,151,774.31/21,997,722.59
6. Step 6: Final answer
   x = 18,015,110.82