Finding the Fourth Proportional to 20,850,538.86, 28,773,977.69 and 11,910,833.00

Step by Step Solution

1. Step 1: Write the proportion equation
   20,850,538.86 : 28,773,977.69 = 11,910,833.00 : x
2. Step 2: Convert to fraction form
   20,850,538.86/28,773,977.69 = 11,910,833.00/x
3. Step 3: Cross multiply
   20,850,538.86x = 28,773,977.69 × 11,910,833.00
4. Step 4: Simplify right side
   20,850,538.86x = 342,722,042,807,891.69
5. Step 5: Solve for x
   x = 342,722,042,807,891.69/20,850,538.86
6. Step 6: Final answer
   x = 16,437,083.24