Finding the Fourth Proportional to 5,111.60, 7,051.12 and 3,219.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.60 : 7,051.12 = 3,219.93 : x
2. Step 2: Convert to fraction form
   5,111.60/7,051.12 = 3,219.93/x
3. Step 3: Cross multiply
   5,111.60x = 7,051.12 × 3,219.93
4. Step 4: Simplify right side
   5,111.60x = 22,704,112.82
5. Step 5: Solve for x
   x = 22,704,112.82/5,111.60
6. Step 6: Final answer
   x = 4,441.68