Finding the Fourth Proportional to 28,111.16, 42,152.97 and 9,384.77

Step by Step Solution

1. Step 1: Write the proportion equation
   28,111.16 : 42,152.97 = 9,384.77 : x
2. Step 2: Convert to fraction form
   28,111.16/42,152.97 = 9,384.77/x
3. Step 3: Cross multiply
   28,111.16x = 42,152.97 × 9,384.77
4. Step 4: Simplify right side
   28,111.16x = 395,595,928.27
5. Step 5: Solve for x
   x = 395,595,928.27/28,111.16
6. Step 6: Final answer
   x = 14,072.56