Finding the Fourth Proportional to 21,858.58, 32,779.82 and 7,814.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,858.58 : 32,779.82 = 7,814.82 : x
2. Step 2: Convert to fraction form
   21,858.58/32,779.82 = 7,814.82/x
3. Step 3: Cross multiply
   21,858.58x = 32,779.82 × 7,814.82
4. Step 4: Simplify right side
   21,858.58x = 256,168,392.93
5. Step 5: Solve for x
   x = 256,168,392.93/21,858.58
6. Step 6: Final answer
   x = 11,719.35