Finding the Fourth Proportional to 19,931.90, 29,922.15 and 10,066.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19,931.90 : 29,922.15 = 10,066.10 : x
2. Step 2: Convert to fraction form
   19,931.90/29,922.15 = 10,066.10/x
3. Step 3: Cross multiply
   19,931.90x = 29,922.15 × 10,066.10
4. Step 4: Simplify right side
   19,931.90x = 301,199,354.12
5. Step 5: Solve for x
   x = 301,199,354.12/19,931.90
6. Step 6: Final answer
   x = 15,111.42