Finding the Fourth Proportional to 21,870.44, 32,810.86 and 7,079.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870.44 : 32,810.86 = 7,079.35 : x
2. Step 2: Convert to fraction form
   21,870.44/32,810.86 = 7,079.35/x
3. Step 3: Cross multiply
   21,870.44x = 32,810.86 × 7,079.35
4. Step 4: Simplify right side
   21,870.44x = 232,279,585.06
5. Step 5: Solve for x
   x = 232,279,585.06/21,870.44
6. Step 6: Final answer
   x = 10,620.71