Finding the Fourth Proportional to 13,617.16, 20,429.69 and 4,852.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,617.16 : 20,429.69 = 4,852.76 : x
2. Step 2: Convert to fraction form
   13,617.16/20,429.69 = 4,852.76/x
3. Step 3: Cross multiply
   13,617.16x = 20,429.69 × 4,852.76
4. Step 4: Simplify right side
   13,617.16x = 99,140,256.03
5. Step 5: Solve for x
   x = 99,140,256.03/13,617.16
6. Step 6: Final answer
   x = 7,280.54