Finding the Fourth Proportional to 9,888.38, 13,645.82 and 5,412.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,888.38 : 13,645.82 = 5,412.02 : x
2. Step 2: Convert to fraction form
   9,888.38/13,645.82 = 5,412.02/x
3. Step 3: Cross multiply
   9,888.38x = 13,645.82 × 5,412.02
4. Step 4: Simplify right side
   9,888.38x = 73,851,365.61
5. Step 5: Solve for x
   x = 73,851,365.61/9,888.38
6. Step 6: Final answer
   x = 7,468.50