Finding the Fourth Proportional to 12,384.42, 17,085.12 and 7,077.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.42 : 17,085.12 = 7,077.30 : x
2. Step 2: Convert to fraction form
   12,384.42/17,085.12 = 7,077.30/x
3. Step 3: Cross multiply
   12,384.42x = 17,085.12 × 7,077.30
4. Step 4: Simplify right side
   12,384.42x = 120,916,519.78
5. Step 5: Solve for x
   x = 120,916,519.78/12,384.42
6. Step 6: Final answer
   x = 9,763.60