Finding the Fourth Proportional to 10,148.67, 14,005.20 and 5,672.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,148.67 : 14,005.20 = 5,672.61 : x
2. Step 2: Convert to fraction form
   10,148.67/14,005.20 = 5,672.61/x
3. Step 3: Cross multiply
   10,148.67x = 14,005.20 × 5,672.61
4. Step 4: Simplify right side
   10,148.67x = 79,446,037.57
5. Step 5: Solve for x
   x = 79,446,037.57/10,148.67
6. Step 6: Final answer
   x = 7,828.22