Finding the Fourth Proportional to 9,888.58, 13,646.27 and 5,412.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,888.58 : 13,646.27 = 5,412.52 : x
2. Step 2: Convert to fraction form
   9,888.58/13,646.27 = 5,412.52/x
3. Step 3: Cross multiply
   9,888.58x = 13,646.27 × 5,412.52
4. Step 4: Simplify right side
   9,888.58x = 73,860,739.89
5. Step 5: Solve for x
   x = 73,860,739.89/9,888.58
6. Step 6: Final answer
   x = 7,469.30