Finding the Fourth Proportional to 10,659.10, 15,989.76 and 3,639.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,659.10 : 15,989.76 = 3,639.82 : x
2. Step 2: Convert to fraction form
   10,659.10/15,989.76 = 3,639.82/x
3. Step 3: Cross multiply
   10,659.10x = 15,989.76 × 3,639.82
4. Step 4: Simplify right side
   10,659.10x = 58,199,848.24
5. Step 5: Solve for x
   x = 58,199,848.24/10,659.10
6. Step 6: Final answer
   x = 5,460.11