Finding the Fourth Proportional to 13,325.86, 19,969.71 and 9,788.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,325.86 : 19,969.71 = 9,788.10 : x
2. Step 2: Convert to fraction form
   13,325.86/19,969.71 = 9,788.10/x
3. Step 3: Cross multiply
   13,325.86x = 19,969.71 × 9,788.10
4. Step 4: Simplify right side
   13,325.86x = 195,465,518.45
5. Step 5: Solve for x
   x = 195,465,518.45/13,325.86
6. Step 6: Final answer
   x = 14,668.14