Finding the Fourth Proportional to 9,124.06, 12,590.34 and 5,145.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.06 : 12,590.34 = 5,145.07 : x
2. Step 2: Convert to fraction form
   9,124.06/12,590.34 = 5,145.07/x
3. Step 3: Cross multiply
   9,124.06x = 12,590.34 × 5,145.07
4. Step 4: Simplify right side
   9,124.06x = 64,778,180.62
5. Step 5: Solve for x
   x = 64,778,180.62/9,124.06
6. Step 6: Final answer
   x = 7,099.71