Finding the Fourth Proportional to 11,869.60, 16,374.88 and 7,151.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,869.60 : 16,374.88 = 7,151.16 : x
2. Step 2: Convert to fraction form
   11,869.60/16,374.88 = 7,151.16/x
3. Step 3: Cross multiply
   11,869.60x = 16,374.88 × 7,151.16
4. Step 4: Simplify right side
   11,869.60x = 117,099,386.86
5. Step 5: Solve for x
   x = 117,099,386.86/11,869.60
6. Step 6: Final answer
   x = 9,865.49