Finding the Fourth Proportional to 19,164.42, 28,748.08 and 5,124.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,164.42 : 28,748.08 = 5,124.15 : x
2. Step 2: Convert to fraction form
   19,164.42/28,748.08 = 5,124.15/x
3. Step 3: Cross multiply
   19,164.42x = 28,748.08 × 5,124.15
4. Step 4: Simplify right side
   19,164.42x = 147,309,474.13
5. Step 5: Solve for x
   x = 147,309,474.13/19,164.42
6. Step 6: Final answer
   x = 7,686.61