Finding the Fourth Proportional to 21,510.90, 32,270.43 and 7,470.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510.90 : 32,270.43 = 7,470.38 : x
2. Step 2: Convert to fraction form
   21,510.90/32,270.43 = 7,470.38/x
3. Step 3: Cross multiply
   21,510.90x = 32,270.43 × 7,470.38
4. Step 4: Simplify right side
   21,510.90x = 241,072,374.86
5. Step 5: Solve for x
   x = 241,072,374.86/21,510.90
6. Step 6: Final answer
   x = 11,206.99