Finding the Fourth Proportional to 37,280.72, 55,903.80 and 13,900.88

Step by Step Solution

1. Step 1: Write the proportion equation
   37,280.72 : 55,903.80 = 13,900.88 : x
2. Step 2: Convert to fraction form
   37,280.72/55,903.80 = 13,900.88/x
3. Step 3: Cross multiply
   37,280.72x = 55,903.80 × 13,900.88
4. Step 4: Simplify right side
   37,280.72x = 777,112,015.34
5. Step 5: Solve for x
   x = 777,112,015.34/37,280.72
6. Step 6: Final answer
   x = 20,844.88