Finding the Fourth Proportional to 37,109.72, 55,674.30 and 18,389

Step by Step Solution

1. Step 1: Write the proportion equation
   37,109.72 : 55,674.30 = 18,389 : x
2. Step 2: Convert to fraction form
   37,109.72/55,674.30 = 18,389/x
3. Step 3: Cross multiply
   37,109.72x = 55,674.30 × 18,389
4. Step 4: Simplify right side
   37,109.72x = 1,023,794,702.70
5. Step 5: Solve for x
   x = 1,023,794,702.70/37,109.72
6. Step 6: Final answer
   x = 27,588.32