Finding the Fourth Proportional to 9,385.21, 12,951.59 and 5,136.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,385.21 : 12,951.59 = 5,136.27 : x
2. Step 2: Convert to fraction form
   9,385.21/12,951.59 = 5,136.27/x
3. Step 3: Cross multiply
   9,385.21x = 12,951.59 × 5,136.27
4. Step 4: Simplify right side
   9,385.21x = 66,522,924.58
5. Step 5: Solve for x
   x = 66,522,924.58/9,385.21
6. Step 6: Final answer
   x = 7,088.06