Finding the Fourth Proportional to 9,788.86, 13,508.52 and 5,312.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788.86 : 13,508.52 = 5,312.71 : x
2. Step 2: Convert to fraction form
   9,788.86/13,508.52 = 5,312.71/x
3. Step 3: Cross multiply
   9,788.86x = 13,508.52 × 5,312.71
4. Step 4: Simplify right side
   9,788.86x = 71,766,849.29
5. Step 5: Solve for x
   x = 71,766,849.29/9,788.86
6. Step 6: Final answer
   x = 7,331.48