Finding the Fourth Proportional to 21,137,903.56, 29,170,362.90 and 12,436,404.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,137,903.56 : 29,170,362.90 = 12,436,404.04 : x
2. Step 2: Convert to fraction form
   21,137,903.56/29,170,362.90 = 12,436,404.04/x
3. Step 3: Cross multiply
   21,137,903.56x = 29,170,362.90 × 12,436,404.04
4. Step 4: Simplify right side
   21,137,903.56x = 362,774,419,017,826.06
5. Step 5: Solve for x
   x = 362,774,419,017,826.06/21,137,903.56
6. Step 6: Final answer
   x = 17,162,270.52