Finding the Fourth Proportional to 28,100.76, 42,150.14 and 7,040.97

Step by Step Solution

1. Step 1: Write the proportion equation
   28,100.76 : 42,150.14 = 7,040.97 : x
2. Step 2: Convert to fraction form
   28,100.76/42,150.14 = 7,040.97/x
3. Step 3: Cross multiply
   28,100.76x = 42,150.14 × 7,040.97
4. Step 4: Simplify right side
   28,100.76x = 296,777,862.43
5. Step 5: Solve for x
   x = 296,777,862.43/28,100.76
6. Step 6: Final answer
   x = 10,561.21