Finding the Fourth Proportional to 9,913.96, 13,681.40 and 5,437.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,913.96 : 13,681.40 = 5,437.42 : x
2. Step 2: Convert to fraction form
   9,913.96/13,681.40 = 5,437.42/x
3. Step 3: Cross multiply
   9,913.96x = 13,681.40 × 5,437.42
4. Step 4: Simplify right side
   9,913.96x = 74,391,456.60
5. Step 5: Solve for x
   x = 74,391,456.60/9,913.96
6. Step 6: Final answer
   x = 7,503.71