Finding the Fourth Proportional to 16,615,667.80, 24,881,511.30 and 13,256,435.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,615,667.80 : 24,881,511.30 = 13,256,435.80 : x
2. Step 2: Convert to fraction form
   16,615,667.80/24,881,511.30 = 13,256,435.80/x
3. Step 3: Cross multiply
   16,615,667.80x = 24,881,511.30 × 13,256,435.80
4. Step 4: Simplify right side
   16,615,667.80x = 329,840,157,155,424.56
5. Step 5: Solve for x
   x = 329,840,157,155,424.56/16,615,667.80
6. Step 6: Final answer
   x = 19,851,152.61