Finding the Fourth Proportional to 7,054.74, 10,623.34 and 5,218.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,054.74 : 10,623.34 = 5,218.81 : x
2. Step 2: Convert to fraction form
   7,054.74/10,623.34 = 5,218.81/x
3. Step 3: Cross multiply
   7,054.74x = 10,623.34 × 5,218.81
4. Step 4: Simplify right side
   7,054.74x = 55,441,113.81
5. Step 5: Solve for x
   x = 55,441,113.81/7,054.74
6. Step 6: Final answer
   x = 7,858.70