Finding the Fourth Proportional to 11,865.63, 16,374.04 and 7,086.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,865.63 : 16,374.04 = 7,086.34 : x
2. Step 2: Convert to fraction form
   11,865.63/16,374.04 = 7,086.34/x
3. Step 3: Cross multiply
   11,865.63x = 16,374.04 × 7,086.34
4. Step 4: Simplify right side
   11,865.63x = 116,032,014.61
5. Step 5: Solve for x
   x = 116,032,014.61/11,865.63
6. Step 6: Final answer
   x = 9,778.83