Finding the Fourth Proportional to 21,804,057.58, 30,087,851.60 and 12,637,290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,804,057.58 : 30,087,851.60 = 12,637,290.82 : x
2. Step 2: Convert to fraction form
   21,804,057.58/30,087,851.60 = 12,637,290.82/x
3. Step 3: Cross multiply
   21,804,057.58x = 30,087,851.60 × 12,637,290.82
4. Step 4: Simplify right side
   21,804,057.58x = 380,228,930,818,202.31
5. Step 5: Solve for x
   x = 380,228,930,818,202.31/21,804,057.58
6. Step 6: Final answer
   x = 17,438,448.30