Finding the Fourth Proportional to 19,407.56, 29,111.31 and 8,307.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,407.56 : 29,111.31 = 8,307.05 : x
2. Step 2: Convert to fraction form
   19,407.56/29,111.31 = 8,307.05/x
3. Step 3: Cross multiply
   19,407.56x = 29,111.31 × 8,307.05
4. Step 4: Simplify right side
   19,407.56x = 241,828,962.18
5. Step 5: Solve for x
   x = 241,828,962.18/19,407.56
6. Step 6: Final answer
   x = 12,460.56