Finding the Fourth Proportional to 9,903.97, 13,667.40 and 5,427.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,903.97 : 13,667.40 = 5,427.72 : x
2. Step 2: Convert to fraction form
   9,903.97/13,667.40 = 5,427.72/x
3. Step 3: Cross multiply
   9,903.97x = 13,667.40 × 5,427.72
4. Step 4: Simplify right side
   9,903.97x = 74,182,820.33
5. Step 5: Solve for x
   x = 74,182,820.33/9,903.97
6. Step 6: Final answer
   x = 7,490.21