Finding the Fourth Proportional to 10,388.31, 14,336.24 and 5,911.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.31 : 14,336.24 = 5,911.98 : x
2. Step 2: Convert to fraction form
   10,388.31/14,336.24 = 5,911.98/x
3. Step 3: Cross multiply
   10,388.31x = 14,336.24 × 5,911.98
4. Step 4: Simplify right side
   10,388.31x = 84,755,534.60
5. Step 5: Solve for x
   x = 84,755,534.60/10,388.31
6. Step 6: Final answer
   x = 8,158.74