Finding the Fourth Proportional to 37,941.48, 56,921.16 and 12,981.80

Step by Step Solution

1. Step 1: Write the proportion equation
   37,941.48 : 56,921.16 = 12,981.80 : x
2. Step 2: Convert to fraction form
   37,941.48/56,921.16 = 12,981.80/x
3. Step 3: Cross multiply
   37,941.48x = 56,921.16 × 12,981.80
4. Step 4: Simplify right side
   37,941.48x = 738,939,114.89
5. Step 5: Solve for x
   x = 738,939,114.89/37,941.48
6. Step 6: Final answer
   x = 19,475.76