Finding the Fourth Proportional to 37,050.76, 55,581.90 and 12,421

Step by Step Solution

1. Step 1: Write the proportion equation
   37,050.76 : 55,581.90 = 12,421 : x
2. Step 2: Convert to fraction form
   37,050.76/55,581.90 = 12,421/x
3. Step 3: Cross multiply
   37,050.76x = 55,581.90 × 12,421
4. Step 4: Simplify right side
   37,050.76x = 690,382,779.90
5. Step 5: Solve for x
   x = 690,382,779.90/37,050.76
6. Step 6: Final answer
   x = 18,633.43