Finding the Fourth Proportional to 9,144.72, 12,619.80 and 4,953

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.72 : 12,619.80 = 4,953 : x
2. Step 2: Convert to fraction form
   9,144.72/12,619.80 = 4,953/x
3. Step 3: Cross multiply
   9,144.72x = 12,619.80 × 4,953
4. Step 4: Simplify right side
   9,144.72x = 62,505,869.40
5. Step 5: Solve for x
   x = 62,505,869.40/9,144.72
6. Step 6: Final answer
   x = 6,835.19