Finding the Fourth Proportional to 12,788.86, 17,648.62 and 7,484.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.86 : 17,648.62 = 7,484.69 : x
2. Step 2: Convert to fraction form
   12,788.86/17,648.62 = 7,484.69/x
3. Step 3: Cross multiply
   12,788.86x = 17,648.62 × 7,484.69
4. Step 4: Simplify right side
   12,788.86x = 132,094,342.67
5. Step 5: Solve for x
   x = 132,094,342.67/12,788.86
6. Step 6: Final answer
   x = 10,328.86