Finding the Fourth Proportional to 10,085.49, 15,125.16 and 4,817.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.49 : 15,125.16 = 4,817.72 : x
2. Step 2: Convert to fraction form
   10,085.49/15,125.16 = 4,817.72/x
3. Step 3: Cross multiply
   10,085.49x = 15,125.16 × 4,817.72
4. Step 4: Simplify right side
   10,085.49x = 72,868,790.43
5. Step 5: Solve for x
   x = 72,868,790.43/10,085.49
6. Step 6: Final answer
   x = 7,225.11