Finding the Fourth Proportional to 13,808,621.40, 19,064,061.91 and 12,276,487.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,808,621.40 : 19,064,061.91 = 12,276,487.59 : x
2. Step 2: Convert to fraction form
   13,808,621.40/19,064,061.91 = 12,276,487.59/x
3. Step 3: Cross multiply
   13,808,621.40x = 19,064,061.91 × 12,276,487.59
4. Step 4: Simplify right side
   13,808,621.40x = 234,039,719,453,106.69
5. Step 5: Solve for x
   x = 234,039,719,453,106.69/13,808,621.40
6. Step 6: Final answer
   x = 16,948,811.37