Finding the Fourth Proportional to 9,918.97, 13,688.48 and 5,443.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,918.97 : 13,688.48 = 5,443.01 : x
2. Step 2: Convert to fraction form
   9,918.97/13,688.48 = 5,443.01/x
3. Step 3: Cross multiply
   9,918.97x = 13,688.48 × 5,443.01
4. Step 4: Simplify right side
   9,918.97x = 74,506,499.40
5. Step 5: Solve for x
   x = 74,506,499.40/9,918.97
6. Step 6: Final answer
   x = 7,511.52