Finding the Fourth Proportional to 9,914.56, 13,681.98 and 5,722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,914.56 : 13,681.98 = 5,722.72 : x
2. Step 2: Convert to fraction form
   9,914.56/13,681.98 = 5,722.72/x
3. Step 3: Cross multiply
   9,914.56x = 13,681.98 × 5,722.72
4. Step 4: Simplify right side
   9,914.56x = 78,298,140.59
5. Step 5: Solve for x
   x = 78,298,140.59/9,914.56
6. Step 6: Final answer
   x = 7,897.29