Finding the Fourth Proportional to 10,988.37, 15,159.77 and 8,123.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,988.37 : 15,159.77 = 8,123.99 : x
2. Step 2: Convert to fraction form
   10,988.37/15,159.77 = 8,123.99/x
3. Step 3: Cross multiply
   10,988.37x = 15,159.77 × 8,123.99
4. Step 4: Simplify right side
   10,988.37x = 123,157,703.46
5. Step 5: Solve for x
   x = 123,157,703.46/10,988.37
6. Step 6: Final answer
   x = 11,208.00