Finding the Fourth Proportional to 9,091.61, 12,553.47 and 7,098.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.61 : 12,553.47 = 7,098.67 : x
2. Step 2: Convert to fraction form
   9,091.61/12,553.47 = 7,098.67/x
3. Step 3: Cross multiply
   9,091.61x = 12,553.47 × 7,098.67
4. Step 4: Simplify right side
   9,091.61x = 89,112,940.88
5. Step 5: Solve for x
   x = 89,112,940.88/9,091.61
6. Step 6: Final answer
   x = 9,801.67