Finding the Fourth Proportional to 10,643.10, 15,967.41 and 5,100.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,643.10 : 15,967.41 = 5,100.72 : x
2. Step 2: Convert to fraction form
   10,643.10/15,967.41 = 5,100.72/x
3. Step 3: Cross multiply
   10,643.10x = 15,967.41 × 5,100.72
4. Step 4: Simplify right side
   10,643.10x = 81,445,287.54
5. Step 5: Solve for x
   x = 81,445,287.54/10,643.10
6. Step 6: Final answer
   x = 7,652.40