Finding the Fourth Proportional to 22,061.56, 30,435.06 and 13,991.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,061.56 : 30,435.06 = 13,991.80 : x
2. Step 2: Convert to fraction form
   22,061.56/30,435.06 = 13,991.80/x
3. Step 3: Cross multiply
   22,061.56x = 30,435.06 × 13,991.80
4. Step 4: Simplify right side
   22,061.56x = 425,841,272.51
5. Step 5: Solve for x
   x = 425,841,272.51/22,061.56
6. Step 6: Final answer
   x = 19,302.41