Finding the Fourth Proportional to 21,710.33, 32,566.15 and 7,478.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,710.33 : 32,566.15 = 7,478.63 : x
2. Step 2: Convert to fraction form
   21,710.33/32,566.15 = 7,478.63/x
3. Step 3: Cross multiply
   21,710.33x = 32,566.15 × 7,478.63
4. Step 4: Simplify right side
   21,710.33x = 243,550,155.02
5. Step 5: Solve for x
   x = 243,550,155.02/21,710.33
6. Step 6: Final answer
   x = 11,218.17