Finding the Fourth Proportional to 17,200.35, 23,737.86 and 10,128.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,200.35 : 23,737.86 = 10,128.15 : x
2. Step 2: Convert to fraction form
   17,200.35/23,737.86 = 10,128.15/x
3. Step 3: Cross multiply
   17,200.35x = 23,737.86 × 10,128.15
4. Step 4: Simplify right side
   17,200.35x = 240,420,606.76
5. Step 5: Solve for x
   x = 240,420,606.76/17,200.35
6. Step 6: Final answer
   x = 13,977.66