Finding the Fourth Proportional to 28,111.85, 42,153.79 and 9,385.46

Step by Step Solution

1. Step 1: Write the proportion equation
   28,111.85 : 42,153.79 = 9,385.46 : x
2. Step 2: Convert to fraction form
   28,111.85/42,153.79 = 9,385.46/x
3. Step 3: Cross multiply
   28,111.85x = 42,153.79 × 9,385.46
4. Step 4: Simplify right side
   28,111.85x = 395,632,791.81
5. Step 5: Solve for x
   x = 395,632,791.81/28,111.85
6. Step 6: Final answer
   x = 14,073.52