Finding the Fourth Proportional to 9,687.53, 13,368.79 and 5,438.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,687.53 : 13,368.79 = 5,438.00 : x
2. Step 2: Convert to fraction form
   9,687.53/13,368.79 = 5,438.00/x
3. Step 3: Cross multiply
   9,687.53x = 13,368.79 × 5,438.00
4. Step 4: Simplify right side
   9,687.53x = 72,699,399.58
5. Step 5: Solve for x
   x = 72,699,399.58/9,687.53
6. Step 6: Final answer
   x = 7,504.43