Finding the Fourth Proportional to 19,166.01, 28,748.88 and 5,315.01

Step by Step Solution

1. Step 1: Write the proportion equation
   19,166.01 : 28,748.88 = 5,315.01 : x
2. Step 2: Convert to fraction form
   19,166.01/28,748.88 = 5,315.01/x
3. Step 3: Cross multiply
   19,166.01x = 28,748.88 × 5,315.01
4. Step 4: Simplify right side
   19,166.01x = 152,800,584.69
5. Step 5: Solve for x
   x = 152,800,584.69/19,166.01
6. Step 6: Final answer
   x = 7,972.48