Finding the Fourth Proportional to 9,638.76, 13,308.06 and 7,293.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638.76 : 13,308.06 = 7,293.72 : x
2. Step 2: Convert to fraction form
   9,638.76/13,308.06 = 7,293.72/x
3. Step 3: Cross multiply
   9,638.76x = 13,308.06 × 7,293.72
4. Step 4: Simplify right side
   9,638.76x = 97,065,263.38
5. Step 5: Solve for x
   x = 97,065,263.38/9,638.76
6. Step 6: Final answer
   x = 10,070.31