Finding the Fourth Proportional to 9,145.35, 12,620.55 and 4,953.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.35 : 12,620.55 = 4,953.60 : x
2. Step 2: Convert to fraction form
   9,145.35/12,620.55 = 4,953.60/x
3. Step 3: Cross multiply
   9,145.35x = 12,620.55 × 4,953.60
4. Step 4: Simplify right side
   9,145.35x = 62,517,156.48
5. Step 5: Solve for x
   x = 62,517,156.48/9,145.35
6. Step 6: Final answer
   x = 6,835.95