Finding the Fourth Proportional to 21,870.96, 32,807.18 and 7,080

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.96 : 32,807.18 = 7,080 : x
2. Step 2: Convert to fraction form
   21,870.96/32,807.18 = 7,080/x
3. Step 3: Cross multiply
   21,870.96x = 32,807.18 × 7,080
4. Step 4: Simplify right side
   21,870.96x = 232,274,799.00
5. Step 5: Solve for x
   x = 232,274,799.00/21,870.96
6. Step 6: Final answer
   x = 10,620.24