Finding the Fourth Proportional to 10,011.38, 14,997.63 and 4,820.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,011.38 : 14,997.63 = 4,820.90 : x
2. Step 2: Convert to fraction form
   10,011.38/14,997.63 = 4,820.90/x
3. Step 3: Cross multiply
   10,011.38x = 14,997.63 × 4,820.90
4. Step 4: Simplify right side
   10,011.38x = 72,302,074.47
5. Step 5: Solve for x
   x = 72,302,074.47/10,011.38
6. Step 6: Final answer
   x = 7,221.99