Finding the Fourth Proportional to 12,659.16, 17,462.34 and 7,619.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,659.16 : 17,462.34 = 7,619.88 : x
2. Step 2: Convert to fraction form
   12,659.16/17,462.34 = 7,619.88/x
3. Step 3: Cross multiply
   12,659.16x = 17,462.34 × 7,619.88
4. Step 4: Simplify right side
   12,659.16x = 133,060,935.32
5. Step 5: Solve for x
   x = 133,060,935.32/12,659.16
6. Step 6: Final answer
   x = 10,511.04