Finding the Fourth Proportional to 13,788.34, 20,526.56 and 13,706.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,788.34 : 20,526.56 = 13,706.33 : x
2. Step 2: Convert to fraction form
   13,788.34/20,526.56 = 13,706.33/x
3. Step 3: Cross multiply
   13,788.34x = 20,526.56 × 13,706.33
4. Step 4: Simplify right side
   13,788.34x = 281,343,753.81
5. Step 5: Solve for x
   x = 281,343,753.81/13,788.34
6. Step 6: Final answer
   x = 20,404.47