Finding the Fourth Proportional to 4,007,521.98, 5,530,399.38 and 2,171,979.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,007,521.98 : 5,530,399.38 = 2,171,979.72 : x
2. Step 2: Convert to fraction form
   4,007,521.98/5,530,399.38 = 2,171,979.72/x
3. Step 3: Cross multiply
   4,007,521.98x = 5,530,399.38 × 2,171,979.72
4. Step 4: Simplify right side
   4,007,521.98x = 12,011,915,296,860.57
5. Step 5: Solve for x
   x = 12,011,915,296,860.57/4,007,521.98
6. Step 6: Final answer
   x = 2,997,342.34