Finding the Fourth Proportional to 21,881.84, 32,814.50 and 7,086.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,881.84 : 32,814.50 = 7,086.78 : x
2. Step 2: Convert to fraction form
   21,881.84/32,814.50 = 7,086.78/x
3. Step 3: Cross multiply
   21,881.84x = 32,814.50 × 7,086.78
4. Step 4: Simplify right side
   21,881.84x = 232,549,106.88
5. Step 5: Solve for x
   x = 232,549,106.88/21,881.84
6. Step 6: Final answer
   x = 10,627.50