Finding the Fourth Proportional to 14,329,128.72, 19,769,004.18 and 8,130,585.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,329,128.72 : 19,769,004.18 = 8,130,585.72 : x
2. Step 2: Convert to fraction form
   14,329,128.72/19,769,004.18 = 8,130,585.72/x
3. Step 3: Cross multiply
   14,329,128.72x = 19,769,004.18 × 8,130,585.72
4. Step 4: Simplify right side
   14,329,128.72x = 160,733,583,084,528.31
5. Step 5: Solve for x
   x = 160,733,583,084,528.31/14,329,128.72
6. Step 6: Final answer
   x = 11,217,261.44