Finding the Fourth Proportional to 9,607.34, 13,258.50 and 5,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,607.34 : 13,258.50 = 5,415.50 : x
2. Step 2: Convert to fraction form
   9,607.34/13,258.50 = 5,415.50/x
3. Step 3: Cross multiply
   9,607.34x = 13,258.50 × 5,415.50
4. Step 4: Simplify right side
   9,607.34x = 71,801,406.75
5. Step 5: Solve for x
   x = 71,801,406.75/9,607.34
6. Step 6: Final answer
   x = 7,473.60