Finding the Fourth Proportional to 12,726,805.50, 17,562,994.47 and 7,003,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726,805.50 : 17,562,994.47 = 7,003,669.50 : x
2. Step 2: Convert to fraction form
   12,726,805.50/17,562,994.47 = 7,003,669.50/x
3. Step 3: Cross multiply
   12,726,805.50x = 17,562,994.47 × 7,003,669.50
4. Step 4: Simplify right side
   12,726,805.50x = 123,005,408,698,207.66
5. Step 5: Solve for x
   x = 123,005,408,698,207.66/12,726,805.50
6. Step 6: Final answer
   x = 9,665,065.49