Finding the Fourth Proportional to 13,287,386.56, 19,929,186.06 and 4,188,300.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,287,386.56 : 19,929,186.06 = 4,188,300.76 : x
2. Step 2: Convert to fraction form
   13,287,386.56/19,929,186.06 = 4,188,300.76/x
3. Step 3: Cross multiply
   13,287,386.56x = 19,929,186.06 × 4,188,300.76
4. Step 4: Simplify right side
   13,287,386.56x = 83,469,425,121,279.39
5. Step 5: Solve for x
   x = 83,469,425,121,279.39/13,287,386.56
6. Step 6: Final answer
   x = 6,281,854.20