Finding the Fourth Proportional to 21,407.80, 32,111.83 and 5,612.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,407.80 : 32,111.83 = 5,612.69 : x
2. Step 2: Convert to fraction form
   21,407.80/32,111.83 = 5,612.69/x
3. Step 3: Cross multiply
   21,407.80x = 32,111.83 × 5,612.69
4. Step 4: Simplify right side
   21,407.80x = 180,233,565.52
5. Step 5: Solve for x
   x = 180,233,565.52/21,407.80
6. Step 6: Final answer
   x = 8,419.06