Finding the Fourth Proportional to 9,788.02, 13,506.55 and 5,539.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,788.02 : 13,506.55 = 5,539.47 : x
2. Step 2: Convert to fraction form
   9,788.02/13,506.55 = 5,539.47/x
3. Step 3: Cross multiply
   9,788.02x = 13,506.55 × 5,539.47
4. Step 4: Simplify right side
   9,788.02x = 74,819,128.53
5. Step 5: Solve for x
   x = 74,819,128.53/9,788.02
6. Step 6: Final answer
   x = 7,643.95