Finding the Fourth Proportional to 11,056.41, 16,590.69 and 5,212.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,056.41 : 16,590.69 = 5,212.89 : x
2. Step 2: Convert to fraction form
   11,056.41/16,590.69 = 5,212.89/x
3. Step 3: Cross multiply
   11,056.41x = 16,590.69 × 5,212.89
4. Step 4: Simplify right side
   11,056.41x = 86,485,441.99
5. Step 5: Solve for x
   x = 86,485,441.99/11,056.41
6. Step 6: Final answer
   x = 7,822.20