Finding the Fourth Proportional to 9,418.07, 12,992.03 and 5,587.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,418.07 : 12,992.03 = 5,587.48 : x
2. Step 2: Convert to fraction form
   9,418.07/12,992.03 = 5,587.48/x
3. Step 3: Cross multiply
   9,418.07x = 12,992.03 × 5,587.48
4. Step 4: Simplify right side
   9,418.07x = 72,592,748.47
5. Step 5: Solve for x
   x = 72,592,748.47/9,418.07
6. Step 6: Final answer
   x = 7,707.81