Finding the Fourth Proportional to 37,156.82, 55,741.05 and 12,191.20

Step by Step Solution

1. Step 1: Write the proportion equation
   37,156.82 : 55,741.05 = 12,191.20 : x
2. Step 2: Convert to fraction form
   37,156.82/55,741.05 = 12,191.20/x
3. Step 3: Cross multiply
   37,156.82x = 55,741.05 × 12,191.20
4. Step 4: Simplify right side
   37,156.82x = 679,550,022.03
5. Step 5: Solve for x
   x = 679,550,022.03/37,156.82
6. Step 6: Final answer
   x = 18,288.70