Finding the Fourth Proportional to 9,139.42, 12,612.63 and 5,604.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.42 : 12,612.63 = 5,604.58 : x
2. Step 2: Convert to fraction form
   9,139.42/12,612.63 = 5,604.58/x
3. Step 3: Cross multiply
   9,139.42x = 12,612.63 × 5,604.58
4. Step 4: Simplify right side
   9,139.42x = 70,688,493.85
5. Step 5: Solve for x
   x = 70,688,493.85/9,139.42
6. Step 6: Final answer
   x = 7,734.46