Finding the Fourth Proportional to 8,256,553.86, 12,379,925.03 and 3,139,357.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,256,553.86 : 12,379,925.03 = 3,139,357.94 : x
2. Step 2: Convert to fraction form
   8,256,553.86/12,379,925.03 = 3,139,357.94/x
3. Step 3: Cross multiply
   8,256,553.86x = 12,379,925.03 × 3,139,357.94
4. Step 4: Simplify right side
   8,256,553.86x = 38,865,015,861,938.83
5. Step 5: Solve for x
   x = 38,865,015,861,938.83/8,256,553.86
6. Step 6: Final answer
   x = 4,707,171.60