Finding the Fourth Proportional to 9,300.54, 13,875.36 and 8,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,300.54 : 13,875.36 = 8,538.50 : x
2. Step 2: Convert to fraction form
   9,300.54/13,875.36 = 8,538.50/x
3. Step 3: Cross multiply
   9,300.54x = 13,875.36 × 8,538.50
4. Step 4: Simplify right side
   9,300.54x = 118,474,691.98
5. Step 5: Solve for x
   x = 118,474,691.98/9,300.54
6. Step 6: Final answer
   x = 12,738.47