Finding the Fourth Proportional to 21,458,404.97, 29,613,377.59 and 12,292,819.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,458,404.97 : 29,613,377.59 = 12,292,819.19 : x
2. Step 2: Convert to fraction form
   21,458,404.97/29,613,377.59 = 12,292,819.19/x
3. Step 3: Cross multiply
   21,458,404.97x = 29,613,377.59 × 12,292,819.19
4. Step 4: Simplify right side
   21,458,404.97x = 364,031,896,140,269
5. Step 5: Solve for x
   x = 364,031,896,140,269/21,458,404.97
6. Step 6: Final answer
   x = 16,964,536.59