Finding the Fourth Proportional to 12,191,907.40, 18,288,621.42 and 3,216,468.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,191,907.40 : 18,288,621.42 = 3,216,468.04 : x
2. Step 2: Convert to fraction form
   12,191,907.40/18,288,621.42 = 3,216,468.04/x
3. Step 3: Cross multiply
   12,191,907.40x = 18,288,621.42 × 3,216,468.04
4. Step 4: Simplify right side
   12,191,907.40x = 58,824,766,293,089.42
5. Step 5: Solve for x
   x = 58,824,766,293,089.42/12,191,907.40
6. Step 6: Final answer
   x = 4,824,902.65