Finding the Fourth Proportional to 37,849.86, 56,783.58 and 12,890.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,849.86 : 56,783.58 = 12,890.12 : x
2. Step 2: Convert to fraction form
   37,849.86/56,783.58 = 12,890.12/x
3. Step 3: Cross multiply
   37,849.86x = 56,783.58 × 12,890.12
4. Step 4: Simplify right side
   37,849.86x = 731,947,192.70
5. Step 5: Solve for x
   x = 731,947,192.70/37,849.86
6. Step 6: Final answer
   x = 19,338.18