Finding the Fourth Proportional to 37,190.76, 55,774.62 and 12,561

Step by Step Solution

1. Step 1: Write the proportion equation
   37,190.76 : 55,774.62 = 12,561 : x
2. Step 2: Convert to fraction form
   37,190.76/55,774.62 = 12,561/x
3. Step 3: Cross multiply
   37,190.76x = 55,774.62 × 12,561
4. Step 4: Simplify right side
   37,190.76x = 700,585,001.82
5. Step 5: Solve for x
   x = 700,585,001.82/37,190.76
6. Step 6: Final answer
   x = 18,837.61