Finding the Fourth Proportional to 13,026.32, 19,526.48 and 5,123.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,026.32 : 19,526.48 = 5,123.89 : x
2. Step 2: Convert to fraction form
   13,026.32/19,526.48 = 5,123.89/x
3. Step 3: Cross multiply
   13,026.32x = 19,526.48 × 5,123.89
4. Step 4: Simplify right side
   13,026.32x = 100,051,412.36
5. Step 5: Solve for x
   x = 100,051,412.36/13,026.32
6. Step 6: Final answer
   x = 7,680.71