Finding the Fourth Proportional to 28,131.77, 42,181.86 and 9,401.94

Step by Step Solution

1. Step 1: Write the proportion equation
   28,131.77 : 42,181.86 = 9,401.94 : x
2. Step 2: Convert to fraction form
   28,131.77/42,181.86 = 9,401.94/x
3. Step 3: Cross multiply
   28,131.77x = 42,181.86 × 9,401.94
4. Step 4: Simplify right side
   28,131.77x = 396,591,316.81
5. Step 5: Solve for x
   x = 396,591,316.81/28,131.77
6. Step 6: Final answer
   x = 14,097.63