Finding the Fourth Proportional to 13,109.07, 19,663.48 and 5,316.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.07 : 19,663.48 = 5,316.03 : x
2. Step 2: Convert to fraction form
   13,109.07/19,663.48 = 5,316.03/x
3. Step 3: Cross multiply
   13,109.07x = 19,663.48 × 5,316.03
4. Step 4: Simplify right side
   13,109.07x = 104,531,649.58
5. Step 5: Solve for x
   x = 104,531,649.58/13,109.07
6. Step 6: Final answer
   x = 7,973.99