Finding the Fourth Proportional to 8,139,559.59, 12,193,377.39 and 4,720,663.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139,559.59 : 12,193,377.39 = 4,720,663.98 : x
2. Step 2: Convert to fraction form
   8,139,559.59/12,193,377.39 = 4,720,663.98/x
3. Step 3: Cross multiply
   8,139,559.59x = 12,193,377.39 × 4,720,663.98
4. Step 4: Simplify right side
   8,139,559.59x = 57,560,837,439,519.42
5. Step 5: Solve for x
   x = 57,560,837,439,519.42/8,139,559.59
6. Step 6: Final answer
   x = 7,071,738.56