Finding the Fourth Proportional to 10,148.72, 14,005.18 and 5,672.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,148.72 : 14,005.18 = 5,672.47 : x
2. Step 2: Convert to fraction form
   10,148.72/14,005.18 = 5,672.47/x
3. Step 3: Cross multiply
   10,148.72x = 14,005.18 × 5,672.47
4. Step 4: Simplify right side
   10,148.72x = 79,443,893.37
5. Step 5: Solve for x
   x = 79,443,893.37/10,148.72
6. Step 6: Final answer
   x = 7,827.98