Finding the Fourth Proportional to 9,384.21, 12,949.52 and 5,134.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,384.21 : 12,949.52 = 5,134.34 : x
2. Step 2: Convert to fraction form
   9,384.21/12,949.52 = 5,134.34/x
3. Step 3: Cross multiply
   9,384.21x = 12,949.52 × 5,134.34
4. Step 4: Simplify right side
   9,384.21x = 66,487,148.10
5. Step 5: Solve for x
   x = 66,487,148.10/9,384.21
6. Step 6: Final answer
   x = 7,085.00