Finding the Fourth Proportional to 15,484.30, 21,368.73 and 9,111.34

Step by Step Solution

1. Step 1: Write the proportion equation
   15,484.30 : 21,368.73 = 9,111.34 : x
2. Step 2: Convert to fraction form
   15,484.30/21,368.73 = 9,111.34/x
3. Step 3: Cross multiply
   15,484.30x = 21,368.73 × 9,111.34
4. Step 4: Simplify right side
   15,484.30x = 194,697,764.40
5. Step 5: Solve for x
   x = 194,697,764.40/15,484.30
6. Step 6: Final answer
   x = 12,573.88