Finding the Fourth Proportional to 19,184.01, 28,773.94 and 5,145.45

Step by Step Solution

1. Step 1: Write the proportion equation
   19,184.01 : 28,773.94 = 5,145.45 : x
2. Step 2: Convert to fraction form
   19,184.01/28,773.94 = 5,145.45/x
3. Step 3: Cross multiply
   19,184.01x = 28,773.94 × 5,145.45
4. Step 4: Simplify right side
   19,184.01x = 148,054,869.57
5. Step 5: Solve for x
   x = 148,054,869.57/19,184.01
6. Step 6: Final answer
   x = 7,717.62