Finding the Fourth Proportional to 37,111.72, 55,677.30 and 18,391

Step by Step Solution

1. Step 1: Write the proportion equation
   37,111.72 : 55,677.30 = 18,391 : x
2. Step 2: Convert to fraction form
   37,111.72/55,677.30 = 18,391/x
3. Step 3: Cross multiply
   37,111.72x = 55,677.30 × 18,391
4. Step 4: Simplify right side
   37,111.72x = 1,023,961,224.30
5. Step 5: Solve for x
   x = 1,023,961,224.30/37,111.72
6. Step 6: Final answer
   x = 27,591.32