Finding the Fourth Proportional to 9,147.47, 12,623.56 and 4,955.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.47 : 12,623.56 = 4,955.72 : x
2. Step 2: Convert to fraction form
   9,147.47/12,623.56 = 4,955.72/x
3. Step 3: Cross multiply
   9,147.47x = 12,623.56 × 4,955.72
4. Step 4: Simplify right side
   9,147.47x = 62,558,800.59
5. Step 5: Solve for x
   x = 62,558,800.59/9,147.47
6. Step 6: Final answer
   x = 6,838.92