Finding the Fourth Proportional to 12,659.29, 17,462.51 and 7,620.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,659.29 : 17,462.51 = 7,620.01 : x
2. Step 2: Convert to fraction form
   12,659.29/17,462.51 = 7,620.01/x
3. Step 3: Cross multiply
   12,659.29x = 17,462.51 × 7,620.01
4. Step 4: Simplify right side
   12,659.29x = 133,064,432.56
5. Step 5: Solve for x
   x = 133,064,432.56/12,659.29
6. Step 6: Final answer
   x = 10,511.21