Finding the Fourth Proportional to 11,892.79, 16,411.85 and 6,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,892.79 : 16,411.85 = 6,587.50 : x
2. Step 2: Convert to fraction form
   11,892.79/16,411.85 = 6,587.50/x
3. Step 3: Cross multiply
   11,892.79x = 16,411.85 × 6,587.50
4. Step 4: Simplify right side
   11,892.79x = 108,112,946.88
5. Step 5: Solve for x
   x = 108,112,946.88/11,892.79
6. Step 6: Final answer
   x = 9,090.63