Finding the Fourth Proportional to 37,038.76, 55,561.52 and 12,072.40

Step by Step Solution

1. Step 1: Write the proportion equation
   37,038.76 : 55,561.52 = 12,072.40 : x
2. Step 2: Convert to fraction form
   37,038.76/55,561.52 = 12,072.40/x
3. Step 3: Cross multiply
   37,038.76x = 55,561.52 × 12,072.40
4. Step 4: Simplify right side
   37,038.76x = 670,760,833.69
5. Step 5: Solve for x
   x = 670,760,833.69/37,038.76
6. Step 6: Final answer
   x = 18,109.70