Finding the Fourth Proportional to 11,328.89, 16,998.90 and 5,093.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,328.89 : 16,998.90 = 5,093.31 : x
2. Step 2: Convert to fraction form
   11,328.89/16,998.90 = 5,093.31/x
3. Step 3: Cross multiply
   11,328.89x = 16,998.90 × 5,093.31
4. Step 4: Simplify right side
   11,328.89x = 86,580,667.36
5. Step 5: Solve for x
   x = 86,580,667.36/11,328.89
6. Step 6: Final answer
   x = 7,642.47