Finding the Fourth Proportional to 9,999.02, 13,798.28 and 5,522.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,999.02 : 13,798.28 = 5,522.96 : x
2. Step 2: Convert to fraction form
   9,999.02/13,798.28 = 5,522.96/x
3. Step 3: Cross multiply
   9,999.02x = 13,798.28 × 5,522.96
4. Step 4: Simplify right side
   9,999.02x = 76,207,396.81
5. Step 5: Solve for x
   x = 76,207,396.81/9,999.02
6. Step 6: Final answer
   x = 7,621.48