Finding the Fourth Proportional to 40,610.76, 55,938.72 and 28,653.12

Step by Step Solution

1. Step 1: Write the proportion equation
   40,610.76 : 55,938.72 = 28,653.12 : x
2. Step 2: Convert to fraction form
   40,610.76/55,938.72 = 28,653.12/x
3. Step 3: Cross multiply
   40,610.76x = 55,938.72 × 28,653.12
4. Step 4: Simplify right side
   40,610.76x = 1,602,818,856.81
5. Step 5: Solve for x
   x = 1,602,818,856.81/40,610.76
6. Step 6: Final answer
   x = 39,467.84