Finding the Fourth Proportional to 12,968,868.98, 17,899,216.41 and 8,780,654.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,968,868.98 : 17,899,216.41 = 8,780,654.62 : x
2. Step 2: Convert to fraction form
   12,968,868.98/17,899,216.41 = 8,780,654.62/x
3. Step 3: Cross multiply
   12,968,868.98x = 17,899,216.41 × 8,780,654.62
4. Step 4: Simplify right side
   12,968,868.98x = 157,166,837,264,846.31
5. Step 5: Solve for x
   x = 157,166,837,264,846.31/12,968,868.98
6. Step 6: Final answer
   x = 12,118,777.47