Finding the Fourth Proportional to 7,051.89, 10,557.08 and 5,211.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,051.89 : 10,557.08 = 5,211.22 : x
2. Step 2: Convert to fraction form
   7,051.89/10,557.08 = 5,211.22/x
3. Step 3: Cross multiply
   7,051.89x = 10,557.08 × 5,211.22
4. Step 4: Simplify right side
   7,051.89x = 55,015,282.64
5. Step 5: Solve for x
   x = 55,015,282.64/7,051.89
6. Step 6: Final answer
   x = 7,801.49