Finding the Fourth Proportional to 9,156.58, 12,635.58 and 5,178.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.58 : 12,635.58 = 5,178.49 : x
2. Step 2: Convert to fraction form
   9,156.58/12,635.58 = 5,178.49/x
3. Step 3: Cross multiply
   9,156.58x = 12,635.58 × 5,178.49
4. Step 4: Simplify right side
   9,156.58x = 65,433,224.67
5. Step 5: Solve for x
   x = 65,433,224.67/9,156.58
6. Step 6: Final answer
   x = 7,146.03