Finding the Fourth Proportional to 10,562.72, 15,844.52 and 3,988.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,562.72 : 15,844.52 = 3,988.76 : x
2. Step 2: Convert to fraction form
   10,562.72/15,844.52 = 3,988.76/x
3. Step 3: Cross multiply
   10,562.72x = 15,844.52 × 3,988.76
4. Step 4: Simplify right side
   10,562.72x = 63,199,987.60
5. Step 5: Solve for x
   x = 63,199,987.60/10,562.72
6. Step 6: Final answer
   x = 5,983.31