Finding the Fourth Proportional to 19,620,513.06, 29,410,985.34 and 12,339,176.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,620,513.06 : 29,410,985.34 = 12,339,176.42 : x
2. Step 2: Convert to fraction form
   19,620,513.06/29,410,985.34 = 12,339,176.42/x
3. Step 3: Cross multiply
   19,620,513.06x = 29,410,985.34 × 12,339,176.42
4. Step 4: Simplify right side
   19,620,513.06x = 362,907,336,796,293.69
5. Step 5: Solve for x
   x = 362,907,336,796,293.69/19,620,513.06
6. Step 6: Final answer
   x = 18,496,322.48