Finding the Fourth Proportional to 10,148.60, 14,004.28 and 5,672.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,148.60 : 14,004.28 = 5,672.12 : x
2. Step 2: Convert to fraction form
   10,148.60/14,004.28 = 5,672.12/x
3. Step 3: Cross multiply
   10,148.60x = 14,004.28 × 5,672.12
4. Step 4: Simplify right side
   10,148.60x = 79,433,956.67
5. Step 5: Solve for x
   x = 79,433,956.67/10,148.60
6. Step 6: Final answer
   x = 7,827.09