Finding the Fourth Proportional to 9,880.89, 14,799.42 and 7,099.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,880.89 : 14,799.42 = 7,099.23 : x
2. Step 2: Convert to fraction form
   9,880.89/14,799.42 = 7,099.23/x
3. Step 3: Cross multiply
   9,880.89x = 14,799.42 × 7,099.23
4. Step 4: Simplify right side
   9,880.89x = 105,064,486.45
5. Step 5: Solve for x
   x = 105,064,486.45/9,880.89
6. Step 6: Final answer
   x = 10,633.10