Finding the Fourth Proportional to 12,538.02, 17,300.70 and 7,231.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538.02 : 17,300.70 = 7,231.86 : x
2. Step 2: Convert to fraction form
   12,538.02/17,300.70 = 7,231.86/x
3. Step 3: Cross multiply
   12,538.02x = 17,300.70 × 7,231.86
4. Step 4: Simplify right side
   12,538.02x = 125,116,240.30
5. Step 5: Solve for x
   x = 125,116,240.30/12,538.02
6. Step 6: Final answer
   x = 9,978.95