Finding the Fourth Proportional to 9,384.77, 12,950.59 and 5,135.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,384.77 : 12,950.59 = 5,135.72 : x
2. Step 2: Convert to fraction form
   9,384.77/12,950.59 = 5,135.72/x
3. Step 3: Cross multiply
   9,384.77x = 12,950.59 × 5,135.72
4. Step 4: Simplify right side
   9,384.77x = 66,510,608.96
5. Step 5: Solve for x
   x = 66,510,608.96/9,384.77
6. Step 6: Final answer
   x = 7,087.08