Finding the Fourth Proportional to 12,777,757.94, 17,633,064.90 and 7,815,834.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,777,757.94 : 17,633,064.90 = 7,815,834.20 : x
2. Step 2: Convert to fraction form
   12,777,757.94/17,633,064.90 = 7,815,834.20/x
3. Step 3: Cross multiply
   12,777,757.94x = 17,633,064.90 × 7,815,834.20
4. Step 4: Simplify right side
   12,777,757.94x = 137,817,111,608,074.25
5. Step 5: Solve for x
   x = 137,817,111,608,074.25/12,777,757.94
6. Step 6: Final answer
   x = 10,785,703.74