Finding the Fourth Proportional to 10,388.16, 15,584.58 and 5,460.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.16 : 15,584.58 = 5,460.12 : x
2. Step 2: Convert to fraction form
   10,388.16/15,584.58 = 5,460.12/x
3. Step 3: Cross multiply
   10,388.16x = 15,584.58 × 5,460.12
4. Step 4: Simplify right side
   10,388.16x = 85,093,676.95
5. Step 5: Solve for x
   x = 85,093,676.95/10,388.16
6. Step 6: Final answer
   x = 8,191.41