Finding the Fourth Proportional to 21,870.68, 32,807.06 and 7,080.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.68 : 32,807.06 = 7,080.75 : x
2. Step 2: Convert to fraction form
   21,870.68/32,807.06 = 7,080.75/x
3. Step 3: Cross multiply
   21,870.68x = 32,807.06 × 7,080.75
4. Step 4: Simplify right side
   21,870.68x = 232,298,554.69
5. Step 5: Solve for x
   x = 232,298,554.69/21,870.68
6. Step 6: Final answer
   x = 10,621.46