Finding the Fourth Proportional to 9,050.90, 12,490.24 and 5,072.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,050.90 : 12,490.24 = 5,072.04 : x
2. Step 2: Convert to fraction form
   9,050.90/12,490.24 = 5,072.04/x
3. Step 3: Cross multiply
   9,050.90x = 12,490.24 × 5,072.04
4. Step 4: Simplify right side
   9,050.90x = 63,350,984.21
5. Step 5: Solve for x
   x = 63,350,984.21/9,050.90
6. Step 6: Final answer
   x = 6,999.41