Finding the Fourth Proportional to 21,690.83, 32,539.62 and 7,652.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,690.83 : 32,539.62 = 7,652.72 : x
2. Step 2: Convert to fraction form
   21,690.83/32,539.62 = 7,652.72/x
3. Step 3: Cross multiply
   21,690.83x = 32,539.62 × 7,652.72
4. Step 4: Simplify right side
   21,690.83x = 249,016,600.77
5. Step 5: Solve for x
   x = 249,016,600.77/21,690.83
6. Step 6: Final answer
   x = 11,480.27