Finding the Fourth Proportional to 13,287,298.53, 19,929,055.31 and 4,188,213.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,287,298.53 : 19,929,055.31 = 4,188,213.60 : x
2. Step 2: Convert to fraction form
   13,287,298.53/19,929,055.31 = 4,188,213.60/x
3. Step 3: Cross multiply
   13,287,298.53x = 19,929,055.31 × 4,188,213.60
4. Step 4: Simplify right side
   13,287,298.53x = 83,467,140,569,698.70
5. Step 5: Solve for x
   x = 83,467,140,569,698.70/13,287,298.53
6. Step 6: Final answer
   x = 6,281,723.89