Finding the Fourth Proportional to 12,651.76, 17,443.18 and 10,374.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,651.76 : 17,443.18 = 10,374.74 : x
2. Step 2: Convert to fraction form
   12,651.76/17,443.18 = 10,374.74/x
3. Step 3: Cross multiply
   12,651.76x = 17,443.18 × 10,374.74
4. Step 4: Simplify right side
   12,651.76x = 180,968,457.27
5. Step 5: Solve for x
   x = 180,968,457.27/12,651.76
6. Step 6: Final answer
   x = 14,303.82