Finding the Fourth Proportional to 12,643,019.47, 18,956,849.48 and 4,957,456.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,643,019.47 : 18,956,849.48 = 4,957,456.42 : x
2. Step 2: Convert to fraction form
   12,643,019.47/18,956,849.48 = 4,957,456.42/x
3. Step 3: Cross multiply
   12,643,019.47x = 18,956,849.48 × 4,957,456.42
4. Step 4: Simplify right side
   12,643,019.47x = 93,977,755,157,599.66
5. Step 5: Solve for x
   x = 93,977,755,157,599.66/12,643,019.47
6. Step 6: Final answer
   x = 7,433,173.33