Finding the Fourth Proportional to 9,619.34, 13,274.78 and 5,427.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,619.34 : 13,274.78 = 5,427.59 : x
2. Step 2: Convert to fraction form
   9,619.34/13,274.78 = 5,427.59/x
3. Step 3: Cross multiply
   9,619.34x = 13,274.78 × 5,427.59
4. Step 4: Simplify right side
   9,619.34x = 72,049,969.67
5. Step 5: Solve for x
   x = 72,049,969.67/9,619.34
6. Step 6: Final answer
   x = 7,490.12